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2021 GMC Sierra 3500HD Trim Levels & Specs

2021 GMC Sierra 3500HD Specifications

Compare important 2021 GMC Sierra 3500HD technical specifications like exterior dimensions, ground clearance, wheelbase, interior space volume, engine's power as measured by horsepower and torque output, weight of the vehicle, towing & payload capacity or gas tank size to know the estimated mpg.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Exterior length 235.5 235.5 235.5 256.5 256.5 235.5 249.9 266.0 256.5 266.0 256.5 249.9 266.0 266.0 235.5 235.5 256.5 235.5 256.5 249.9 235.5 266.0 256.5 266.0 256.5 249.9 266.0 266.0 249.9 266.0 266.0 249.9 266.0 266.0 249.9 266.0 249.9 266.0 266.0
Exterior body width 81.8 96.6 81.8 81.8 96.6 96.6 81.8 81.8 81.8 96.6 96.6 81.8 81.8 96.6 81.8 96.6 81.8 81.8 96.6 81.8 96.6 81.8 81.8 96.6 96.6 81.8 81.8 96.6 81.8 81.8 96.6 81.8 81.8 96.6 81.8 81.8 81.8 81.8 96.6
Exterior height 80.9 80.2 80.9 80.9 80.2 80.2 80.9 80.7 80.9 80.0 80.2 80.9 80.7 80.0 80.9 80.2 80.9 80.9 80.2 80.9 80.2 80.7 80.9 80.0 80.2 80.9 80.7 80.0 80.9 80.7 80.0 80.9 80.7 80.0 80.9 80.7 80.9 80.7 80.0
Horsepower 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp 401 hp
Torque 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft. 464 lb-ft.
Curb weight 6231 6520 6528 6689 6977 6817 6647 6779 6971 7068 7259 6947 7059 7352 6231 6520 6689 6528 6977 6647 6817 6779 6971 7068 7259 6947 7059 7352 6647 6779 7068 6947 7059 7352 6947 7059 6947 7059 7352
Gross vehicle weight rating (GVWR) 10750 14000 11100 11100 14000 14000 11000 11150 11400 14000 14000 11350 11500 14000 10750 14000 11100 11100 14000 11000 14000 11150 11400 14000 14000 11350 11500 14000 11000 11150 14000 11350 11500 14000 11350 11500 11350 11500 14000
Wheelbase 141.6 141.6 141.6 162.5 162.5 141.6 158.9 172.0 162.5 172.0 162.5 158.9 172.0 172.0 141.6 141.6 162.5 141.6 162.5 158.9 141.6 172.0 162.5 172.0 162.5 158.9 172.0 172.0 158.9 172.0 172.0 158.9 172.0 172.0 158.9 172.0 158.9 172.0 172.0
Turning radius 23.5 '' 23.5 '' 23.5 '' 26.9 '' 26.9 '' 23.5 '' 26.3 '' 28.5 '' 26.9 '' 28.5 '' 26.9 '' 26.3 '' 28.5 '' 28.5 '' 23.5 '' 23.5 '' 26.9 '' 23.5 '' 26.9 '' 26.3 '' 23.5 '' 28.5 '' 26.9 '' 28.5 '' 26.9 '' 26.3 '' 28.5 '' 28.5 '' 26.3 '' 28.5 '' 28.5 '' 26.3 '' 28.5 '' 28.5 '' 26.3 '' 28.5 '' 26.3 '' 28.5 '' 28.5 ''
Ground clearance 11.2 10.5 11.2 11.2 10.4 10.5 11.2 11.1 11.2 10.4 10.4 11.2 11.1 10.4 11.2 10.5 11.2 11.2 10.4 11.2 10.5 11.1 11.2 10.4 10.4 11.2 11.1 10.4 11.2 11.1 10.4 11.2 11.1 10.4 11.2 11.1 11.2 11.1 10.4
Front legroom 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5 44.5
Rear legroom N/A N/A N/A 35.2 35.2 N/A 43.4 43.4 35.2 43.4 35.2 43.4 43.4 43.4 N/A N/A 35.2 N/A 35.2 43.4 N/A 43.4 35.2 43.4 35.2 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4 43.4
Front headroom 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43
Rear headroom N/A N/A N/A 40 40 N/A 40 40 40 40 40 40 40 40 N/A N/A 40 N/A 40 40 N/A 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
Front hip room 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
Rear hip room N/A N/A N/A 60 60 N/A 60 60 60 60 60 60 60 60 N/A N/A 60 N/A 60 60 N/A 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60
Front shoulder room 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66
Rear shoulder room N/A N/A N/A 65 65 N/A 65 65 65 65 65 65 65 65 N/A N/A 65 N/A 65 65 N/A 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65
Fuel tank 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal. 36.0 gal.
Payload 4,481 lbs. 7,442 lbs. 4,534 lbs. 4,373 lbs. 6,985 lbs. 7,145 lbs. 4,316 lbs. 4,333 lbs. 4,391 lbs. 6,894 lbs. 6,703 lbs. 4,365 lbs. 4,403 lbs. 6,610 lbs. 4,481 lbs. 7,442 lbs. 4,373 lbs. 4,534 lbs. 6,985 lbs. 4,316 lbs. 7,145 lbs. 4,333 lbs. 4,391 lbs. 6,894 lbs. 6,703 lbs. 4,365 lbs. 4,403 lbs. 6,610 lbs. 4,316 lbs. 4,333 lbs. 6,894 lbs. 4,365 lbs. 4,403 lbs. 6,610 lbs. 4,365 lbs. 4,403 lbs. 4,365 lbs. 4,403 lbs. 6,610 lbs.

2021 GMC Sierra 3500HD Interior Features

One of the most notable features of the Sierra 3500HD, however, is its roomy interior. The 2021 GMC Sierra 3500HD comes with a variety of specs on the inside. You can find out more about these features in the chart below.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Air conditioning, front manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual manual dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic dual zone automatic
Underseat ducts N/A N/A N/A std std N/A std std std std std std std std N/A N/A std N/A std std N/A std std std std std std std std std std std std std std std std std std
Clock in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display in-radio display
Compass opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Cruise control opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Cupholders front front front front and rear front and rear front front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front front front and rear front front and rear front and rear front front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear
Gear shift knob trim urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane
12V DC power outlet 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2
Overhead console mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini mini
Floor console N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A full N/A full full N/A full full full full full full full full full full full full full full full full full full
Floor mats vinyl/rubber front vinyl/rubber front vinyl/rubber front rubber front and rear rubber front and rear vinyl/rubber front rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear vinyl/rubber front vinyl/rubber front rubber front and rear vinyl/rubber front rubber front and rear rubber front and rear vinyl/rubber front rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear rubber front and rear carpeted front and rear carpeted front and rear carpeted front and rear carpeted front and rear carpeted front and rear carpeted front and rear rubber w/carpet inserts front and rear rubber w/carpet inserts front and rear carpeted front and rear carpeted front and rear carpeted front and rear
Front windows manual manual manual power power manual power power power power power power power power power power power power power power power power power power power power power power power power power power power power power power power power power
Rear windows N/A N/A N/A power power N/A power power power power power power power power N/A N/A power N/A power power N/A power power power power power power power power power power power power power power power power power power
1-touch window up driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger
1-touch window down driver and passenger driver and passenger driver and passenger front and rear front and rear driver and passenger front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear driver and passenger driver and passenger front and rear driver and passenger front and rear front and rear driver and passenger front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear
Programmable garage door opener N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt N/A opt opt N/A opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std
Instrumentation analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog analog
Tachometer std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Trip computer std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Water temp gauge std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Low fuel warning std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Service interval warning std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Exterior temperature display std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Illuminated vanity mirrors N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger
Rear window defogger opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std
Rear view mirror day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night auto-dimming day-night
Retained accessory power std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Seatback storage pockets N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 2 N/A 2 N/A 2 N/A 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Tilt-Wheel adjustable steering column std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Steering wheel material urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane urethane leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look leather/metal-look
Head-up display N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt
Oil pressure gauge std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Voltage gauge std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std

2021 GMC Sierra 3500HD Exterior Features

Would you like to grasp the idea which 2021 GMC Sierra 3500HD trim level is better equipped with such little cool exterior features like fog lights, spoiler, mud flaps, sunroof, roof racks, running boards, etc? Check out the full list of these additional features below.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Antenna fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed
Body material galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum galvanized steel/aluminum
Paint clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone clearcoat monotone
Grille trim black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround black w/chrome surround dark chrome dark chrome black w/chrome accents black w/chrome accents black w/chrome accents
Fog/driving lights N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A front front front front front front front front front front front front front front front front front front front front front front front front front
Door count 2 doors 2 doors 2 doors 4 doors 4 doors 2 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 2 doors 2 doors 4 doors 2 doors 4 doors 4 doors 2 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors 4 doors
Rear cargo door tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate tailgate
Tinted windows light light light light light light light light light light light light light light deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep deep
Rear window type fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed fixed power power power
Mirrors dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual manual dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote dual power remote
Heated door mirrors opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Sunroof N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass 1st row regular express open/close sliding and tilting glass
Wheels 18 painted steel 17 painted steel 18 painted steel 18 painted steel 17 painted steel 17 painted steel 18 painted steel 18 painted steel 18 painted steel 17 painted steel 17 painted steel 18 painted steel 18 painted steel 17 painted steel 18 machined w/painted accents aluminum 17 painted steel 18 machined w/painted accents aluminum 18 machined w/painted accents aluminum 17 painted steel 18 machined w/painted accents aluminum 17 painted steel 18 machined w/painted accents aluminum 18 machined w/painted accents aluminum 17 painted steel 17 painted steel 18 machined w/painted accents aluminum 18 machined w/painted accents aluminum 17 painted steel 18 machined w/painted accents aluminum 18 machined w/painted accents aluminum 17 painted steel 18 machined w/painted accents aluminum 18 machined w/painted accents aluminum 17 painted steel 18 machined w/painted accents aluminum 18 machined w/painted accents aluminum 20 polished aluminum 20 polished aluminum 17 polished forged aluminum
Spare tire and wheel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel full-size steel
Mud flaps opt N/A opt opt N/A N/A opt opt opt N/A N/A opt opt N/A opt N/A opt opt N/A opt N/A opt opt N/A N/A opt opt N/A opt opt N/A opt opt N/A opt opt opt opt N/A
Mirrors, auto dimming driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger
Fender flares N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt N/A opt opt N/A opt N/A opt opt N/A N/A opt opt N/A opt opt N/A opt opt N/A opt opt opt opt N/A
Rear step bumper std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Pickup box regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular regular
Pickup cargo box light std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Pickup truck tonneau cover N/A N/A N/A N/A N/A N/A soft N/A N/A N/A N/A soft N/A N/A N/A N/A N/A N/A N/A soft N/A N/A N/A N/A N/A soft N/A N/A soft N/A N/A soft N/A N/A soft N/A soft N/A N/A

2021 GMC Sierra 3500HD Seats

The seats are one of the most important aspects of any car, and each 2021 GMC Sierra 3500HD trim level may have different seating options, so be sure to carefully compare the specifications. Some trims have leather upholstery, "memory", armrest, heated seats, and some have them only for the front passengers, while other provide them for the rear seats two.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Front seat type split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench split-bench bucket bucket bucket bucket bucket
Standard seating 3 3 3 6 6 3 6 6 6 6 6 6 6 6 3 3 6 3 6 6 3 6 6 6 6 6 6 6 6 6 6 6 6 6 5 5 5 5 5
Front driver seat direction controls 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power
Front passenger seat direction controls 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 4-way 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power 8-way power
Lumbar support driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger
Front armrests center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center center
Front head restraints adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable adjustable
Heated front seats N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback driver and front passenger heated-cushion, heated-seatback
Memory N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A driver driver driver driver driver driver driver driver driver driver driver
Rear seats N/A N/A N/A 60-40 split-bench 60-40 split-bench N/A 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench N/A N/A 60-40 split-bench N/A 60-40 split-bench 60-40 split-bench N/A 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench 60-40 split-bench
Rear armrest N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt N/A opt N/A opt N/A opt opt opt std std std std std std std std std std std
Rear head restraints N/A N/A N/A 2 - adjustable 2 - adjustable N/A 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable N/A N/A 2 - adjustable N/A 2 - adjustable 2 - adjustable N/A 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable 2 - adjustable
Seat trim vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl vinyl cloth cloth cloth cloth cloth cloth cloth cloth cloth cloth cloth cloth cloth cloth leather leather leather leather leather leather leather leather leather leather leather
Heated rear seats N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt opt std std std std std
Cooled front seats N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger

2021 GMC Sierra 3500HD Entertainment System

Some 2021 GMC Sierra 3500HD trim levels have a built-in DVD player, voice recognition, while others have a touch screen display, bluetooth compatibility, navigation system. There are also a variety of different audio options, so be sure to compare the trim levels carefully to find the one that best suits your needs.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Radio AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM stereo, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan AM/FM/HD/Satellite, seek-scan
Auxiliary input jack N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt N/A opt opt N/A opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std
Steering wheel audio controls opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Voice recognition std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Speakers 2 2 2 6 6 2 6 6 6 6 6 6 6 6 2 2 6 2 6 6 2 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 7 brand 7 brand 7 brand
Amplifier N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt opt opt opt std std std
Navigation system N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt opt opt opt yes with voice activation yes with voice activation yes with voice activation
1st row LCD screen 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Bluetooth Compatibility std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std

2021 GMC Sierra 3500HD Safety and Security Features

Each 2021 GMC Sierra 3500HD trim comes with a variety of safety and security features that will keep you and your family safe while on the road. Some of these features include airbags, traction control, stability control, side impact, panic alarm, blind spot sensors, parking assist, and more.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Airbags, frontal driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger driver and front passenger driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger w/passenger front-impact cancellable driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger driver and front passenger
Airbags, side impact seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger seat mounted, driver and passenger
Airbags, side curtain curtain 1st row curtain 1st row curtain 1st row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st row curtain 1st row curtain 1st and 2nd row curtain 1st row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row curtain 1st and 2nd row
Occupancy sensor std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Traction control ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline ABS and driveline
Seatbelt pre-tensioners front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front
Headlights LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam LED low/high beam
Exterior light control fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic fully automatic
Delay-off headlamps std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Daytime running lights std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Illuminated entry opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Remote keyless entry keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors) keyfob (all doors)
Keyless access system N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std
Panic alarm opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Door locks manual manual manual manual manual manual power power manual power manual power power power power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock power with 2 stage unlock
Content theft deterrent alarm system N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std
Ignition disable std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Theft deterrent radio std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Low tire pressure warning std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Parking assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist Front and Rear Park Assist
Lane departure warning N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning Lane Departure Warning
Blind spot sensor opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std
In-Vehicle Assistance Service OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Stolen vehicle tracking opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std std std std std std std std std std std std std std std
Automatic Crash Response (airbags and/or sensors) OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Emergency Services OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Crisis Assist OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Stolen Vehicle Assistance OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Remote Door Unlock OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Roadside Assistance OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Remote Horn and Lights OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Hands-Free Calling OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable
Vehicle Diagnostics OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable OnStar and GMC connected services capable

2021 GMC Sierra 3500HD Mechanical Features

The 2021 GMC Sierra 3500HD will have different mechanical features depending on the trim level that you choose. Some of the other features that you may find in the higher-level trim levels include air suspension, brake assist, speed sensitive steering, an electronic limited slip differential, a performance exhaust system.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Engine 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8 6.6L V-8
Brakes DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc DuraLife 4-wheel disc
Anti-lock braking system (ABS) 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel 4-wheel
Brake assist std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Drive type rear-wheel rear-wheel four-wheel rear-wheel rear-wheel four-wheel rear-wheel rear-wheel four-wheel rear-wheel four-wheel four-wheel four-wheel four-wheel rear-wheel rear-wheel rear-wheel four-wheel rear-wheel rear-wheel four-wheel rear-wheel four-wheel rear-wheel four-wheel four-wheel four-wheel four-wheel rear-wheel rear-wheel rear-wheel four-wheel four-wheel four-wheel four-wheel four-wheel four-wheel four-wheel four-wheel
Exhaust stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel stainless steel
Steering re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball re-circulating ball
Speed sensitive steering N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist Digital Variable Steering Assist
Suspension tuning heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty heavy duty off-road off-road off-road off-road heavy duty
Front suspension type short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm short and long arm
Front anti-roll bar std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Front shocks gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized Rancho Rancho Rancho Rancho gas-pressurized
Front springs torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar torsion bar
Rear suspension type leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf
Rear shocks gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized gas-pressurized Rancho Rancho Rancho Rancho gas-pressurized
Rear springs leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf leaf
Electronic stability system StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance StabiliTrak w/Proactive Roll Avoidance
Transmission 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD 6-spd auto w/OD
Axle ratio 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73 3.73
Turbocharger intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo intercooled turbo
Engine block heater opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt
Remote vehicle starting system N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std std std std std std std
Locking/limited slip differential std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
4WD shift N/A N/A electronic N/A N/A electronic N/A N/A electronic N/A electronic electronic electronic electronic N/A N/A N/A electronic N/A N/A electronic N/A electronic N/A electronic electronic electronic electronic N/A N/A N/A electronic electronic electronic electronic electronic electronic electronic electronic

2021 GMC Sierra 3500HD Other Specs

In general, the 2021 GMC Sierra 3500HD lower-level trims will have fewer features. If you are looking for a vehicle that has all of the latest and greatest features, then you will want to choose one of the higher-level trim levels.
Trims Base 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 Base 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Base 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Regular Cab 8 ft. box 141.6 in. WB DRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB SRW, Engine: 6.6L V-8 SLE 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Double Cab 8 ft. box 162.5 in. WB DRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLE 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x2 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 SLT 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 AT4 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 6.75 ft. box 158.9 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB SRW, Engine: 6.6L V-8 Denali 4x4 Crew Cab 8 ft. box 172 in. WB DRW, Engine: 6.6L V-8
Base engine size 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters 6.6 liters
Base engine type V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8 V-8
Horsepower rpm 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200 5,200
Torque rpm 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000
Driver information center std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std std
Lighting - map lights front front front front and rear front and rear front front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front front front and rear front front and rear front and rear front front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear front and rear
Lighting - dome light fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade fade
Mirrors - visor vanity mirrors passenger passenger passenger passenger passenger passenger passenger passenger passenger passenger passenger passenger passenger passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger driver and passenger
Height adjustable safety belts front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front front
Engine - valvetrain OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV OHV
Warranty - Basic (mths/miles) 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000 36/36,000
Warrranty - Powertrain (mths/miles) 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000
Warranty - Corrosion perforation (mths/miles) 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000 72/100,000
Warranty - Roadside assistance (mths/miles) 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000 60/60,000
Warranty - Maintenance (mths/miles) 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited 12/unlimited
Tires LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT235/80SR17.0E BSW highway LT275/70SR18.0E BSW AT LT275/70SR18.0E BSW AT LT275/65SR20.0E BSW AT LT275/65SR20.0E BSW AT LT235/80SR17.0E BSW highway
Windshield wipers - front variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent variable intermittent
Bodyside moldings N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored body-colored chrome chrome chrome chrome chrome chrome chrome chrome chrome chrome chrome
Maximum towing capacity 14,500 lbs. 16,800 lbs. 14,500 lbs. 14,500 lbs. 16,400 lbs. 16,800 lbs. 14,500 lbs. 14,500 lbs. 14,500 lbs. 16,300 lbs. 16,390 lbs. 14,500 lbs. 14,500 lbs. 16,240 lbs. 14,500 lbs. 16,800 lbs. 14,500 lbs. 14,500 lbs. 16,400 lbs. 14,500 lbs. 16,800 lbs. 14,500 lbs. 14,500 lbs. 16,300 lbs. 16,390 lbs. 14,500 lbs. 14,500 lbs. 16,240 lbs. 14,500 lbs. 14,500 lbs. 16,300 lbs. 14,500 lbs. 14,500 lbs. 16,240 lbs. 14,500 lbs. 14,500 lbs. 14,500 lbs. 14,500 lbs. 16,010 lbs.
Pickup bed liner opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt opt std std std std std
Dual rear wheels N/A std N/A N/A std std N/A N/A N/A std std N/A N/A std N/A std N/A N/A std N/A std N/A N/A std std N/A N/A std N/A N/A std N/A N/A std N/A N/A N/A N/A std

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2021 GMC Sierra 3500HD specs

Wheel Offset
Lug Nut Size M14 x 1.5
Horsepower 401 hp
Dimensions ...
Lug Pattern PCD 8x180
Interior Look