GMC Sierra 1500 GMC Sierra 1500 2021

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GMC Sierra 1500 Specs at TrueDelta: Powertrains and tires by trim level (2021)

How powerful is the engine? How much room is in the back seat? Get the 2021 GMC Sierra 1500 specs.

2021 GMC Sierra 1500 Specs - Exterior and Interior Dimensions

Body Regular Cab 8ft bed Extended Cab 6.5ft bed Crew Cab 6ft bed Crew Cab 6.5ft bed
Wheelbase 139.6 in 147.4 in 147.4 in 157.0 in
Length 229.6 in 231.8 in 231.7 in 241.3 in
Width 81.2 in 81.2 in 81.2 in 81.2 in
Height 75.6 in 75.6 in 75.5 in 75.4 in
Curb Weight 4520 lb. 4720 lb. 4720 lb. 4800 lb.
Fuel Capacity 28.0 gal. 24.0 gal. 24.0 gal. 24.0 gal.
Headroom, Row 1 43.1 in 43.0 in 43.0 in 43.0 in
Shoulder Room, Row 1 66.1 in 66.0 in 66.0 in 66.0 in
Hip Room, Row 1 60.9 in 61.2 in 61.2 in 61.2 in
Legroom, Row 1 44.5 in 44.5 in 44.5 in 44.5 in
Headroom, Row 2 0.0 in 39.9 in 40.1 in 40.1 in
Shoulder Room, Row 2 0.0 in 64.9 in 65.2 in 65.2 in
Hip Room, Row 2 0.0 in 60.2 in 60.2 in 60.2 in
Legroom, Row 2 0.0 in 35.2 in 43.4 in 43.4 in
Total Legroom 44.5 in (over 1 rows) 79.7 in (over 2 rows) 87.9 in (over 2 rows) 87.9 in (over 2 rows)

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2021 GMC Sierra 1500 Regular Cab 8ft bed Specs - Powertrains and Tire Sizes

Trim Base
Standard Engine 4.3L V6
OHV-2v
285 hp@5300
305 lb-ft@3900
Optional Engine(s) 5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
Standard Transmission6-speed manually-shiftable automatic
Standard DrivetrainRWD
Optional Drivetrain(s)4WD w/low range
 4WD
Standard Tires255/70R17 tires
Optional Tires265/70R17 tires

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2021 GMC Sierra 1500 Extended Cab 6.5ft bed Specs - Powertrains and Tire Sizes

Trim Base SLE Elevation
Standard Engine 4.3L V6
OHV-2v
285 hp@5300
305 lb-ft@3900
turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
Optional Engine(s) 5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
 turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
Standard Transmission6-speed manually-shiftable automatic8-speed manually-shiftable automatic8-speed manually-shiftable automatic
Optional Transmission(s)8-speed manually-shiftable automatic10-speed manually-shiftable automatic10-speed manually-shiftable automatic
Standard DrivetrainRWDRWDRWD
Optional Drivetrain(s)4WD w/low range4WD w/low range4WD w/low range
 4WD4WD4WD
Standard Tires255/70R17 tires255/70R17 tires275/60R20 tires
Optional Tires265/70R17 tires265/70R17 tires 
  265/65R18 tires 
  275/60R20 tires 

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2021 GMC Sierra 1500 Crew Cab 6ft bed Specs - Powertrains and Tire Sizes

Trim Base SLE Elevation SLT AT4 Denali
Standard Engine 4.3L V6
OHV-2v
285 hp@5300
305 lb-ft@3900
turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
Optional Engine(s) 5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
6.2L V8
OHV-2v
420 hp@5600
460 lb-ft@4100
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
6.2L V8
OHV-2v
420 hp@5600
460 lb-ft@4100
 turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
6.2L V8
OHV-2v
420 hp@5600
460 lb-ft@4100
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
Standard Transmission6-speed manually-shiftable automatic8-speed manually-shiftable automatic8-speed manually-shiftable automatic8-speed manually-shiftable automatic10-speed manually-shiftable automatic8-speed manually-shiftable automatic
Optional Transmission(s)8-speed manually-shiftable automatic10-speed manually-shiftable automatic10-speed manually-shiftable automatic10-speed manually-shiftable automatic 10-speed manually-shiftable automatic
Standard DrivetrainRWDRWDRWDRWD4WD w/low rangeRWD
Optional Drivetrain(s)4WD w/low range4WD w/low range4WD w/low range4WD 4WD w/low range
 4WD4WD4WD4WD w/low range  
Standard Tires255/70R17 tires255/70R17 tires275/60R20 tires265/65R18 tires265/65R18 tires275/60R20 tires
Optional Tires265/70R17 tires265/70R17 tires 275/60R20 tires275/60R20 tires275/50R22 tires
  265/65R18 tires  275/65R18 tires 
  275/60R20 tires    

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2021 GMC Sierra 1500 Crew Cab 6.5ft bed Specs - Powertrains and Tire Sizes

Trim Base SLE Elevation SLT AT4 Denali
Standard Engine 4.3L V6
OHV-2v
285 hp@5300
305 lb-ft@3900
turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
Optional Engine(s) 5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
5.3L V8
OHV-2v
355 hp@5600
383 lb-ft@4100
6.2L V8
OHV-2v
420 hp@5600
460 lb-ft@4100
6.2L V8
OHV-2v
420 hp@5600
460 lb-ft@4100
6.2L V8
OHV-2v
420 hp@5600
460 lb-ft@4100
 turbocharged
2.7L I4
DOHC-4v
310 hp@5600
348 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
 turbocharged
3.0L V6 Diesel
DOHC-4v
277 hp@3750
460 lb-ft@1500
Standard Transmission6-speed manually-shiftable automatic8-speed manually-shiftable automatic8-speed manually-shiftable automatic8-speed manually-shiftable automatic10-speed manually-shiftable automatic10-speed manually-shiftable automatic
Optional Transmission(s)8-speed manually-shiftable automatic10-speed manually-shiftable automatic10-speed manually-shiftable automatic10-speed manually-shiftable automatic  
Standard Drivetrain4WD4WD4WD4WD4WD w/low range4WD w/low range
Optional Drivetrain(s)4WD w/low range4WD w/low range4WD w/low range4WD w/low range  
Standard Tires255/70R17 tires255/70R17 tires275/60R20 tires265/65R18 tires265/65R18 tires275/60R20 tires
Optional Tires265/70R17 tires265/70R17 tires 275/60R20 tires275/60R20 tires275/50R22 tires
  265/65R18 tires  275/65R18 tires 
  275/60R20 tires    

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What Our Members Are Saying about the Powertrain of the 2021 GMC Sierra 1500

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What Our Members Are Saying about the Tires of the 2021 GMC Sierra 1500

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