2021 GMC Sierra 1500
6 trims · 27 configurations · Truck (Crew Cab), Truck (Regular Cab), Truck (Double Cab)
Starting MSRP
$30,100 – $59,600
Key specifications
NHTSA safety
5 / 5 overall
Source: NHTSA
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Manufacturer specs and trim data below are still available for research. Check back for dealer inventory, or browse other GMC models.
Shop GMC inventoryPricing
How much should you pay for the GMC Sierra 1500? Select a trim to update purchase and lease estimates.
MSRP by trim
Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.
Purchase information
Based on Base
Total price (Base MSRP)
$30,100
Typical monthly
$596/mo
Avg. APR
7.00%
60-month loan estimate for good credit (rates as of 2026-07-12). Not a credit offer; actual APR varies by lender, credit, and dealer.
Open loan calculatorCompare 2021 GMC Sierra 1500 trims
Base
7 configurations
- MSRP
- $30,100 – $40,000
- Fuel economy (city/hwy)
- 16/21
- Horsepower
- 285 hp
- Torque
- 305 lb-ft
- Engine
- 4.3L V6 flex-fuel (FFV)
- Seating
- 3
- Drivetrain
- RWD
- Cargo (cu ft)
- —
- Max towing
- 9,900 lbs
SLE
5 configurations
- MSRP
- $41,400 – $47,400
- Fuel economy (city/hwy)
- 20/23
- Horsepower
- 310 hp
- Torque
- 348 lb-ft
- Engine
- 2.7L I4 gas
- Seating
- 6
- Drivetrain
- RWD
- Cargo (cu ft)
- —
- Max towing
- 11,200 lbs
Elevation
7 configurations
- MSRP
- $43,100 – $49,300
- Fuel economy (city/hwy)
- 20/23
- Horsepower
- 310 hp
- Torque
- 348 lb-ft
- Engine
- 2.7L I4 gas
- Seating
- 6
- Drivetrain
- RWD
- Cargo (cu ft)
- —
- Max towing
- 11,200 lbs
SLT
3 configurations
- MSRP
- $47,500 – $51,100
- Fuel economy (city/hwy)
- 17/23
- Horsepower
- 355 hp
- Torque
- 383 lb-ft
- Engine
- 5.3L V8 gas
- Seating
- 6
- Drivetrain
- RWD
- Cargo (cu ft)
- —
- Max towing
- 11,200 lbs
AT4
2 configurations
- MSRP
- $54,700 – $55,900
- Fuel economy (city/hwy)
- 16/21
- Horsepower
- 355 hp
- Torque
- 383 lb-ft
- Engine
- 5.3L V8 gas
- Seating
- 5
- Drivetrain
- 4WD
- Cargo (cu ft)
- —
- Max towing
- 9,200 lbs
Denali
3 configurations
- MSRP
- $55,800 – $59,600
- Fuel economy (city/hwy)
- 17/23
- Horsepower
- 355 hp
- Torque
- 383 lb-ft
- Engine
- 5.3L V8 gas
- Seating
- 5
- Drivetrain
- RWD
- Cargo (cu ft)
- —
- Max towing
- 9,500 lbs
| Spec | Base7 configurations | SLE5 configurations | Elevation7 configurations | SLT3 configurations | AT42 configurations | Denali3 configurations |
|---|---|---|---|---|---|---|
| MSRP | $30,100 – $40,000 | $41,400 – $47,400 | $43,100 – $49,300 | $47,500 – $51,100 | $54,700 – $55,900 | $55,800 – $59,600 |
| Fuel economy (city/hwy) | 16/21 | 20/23 | 20/23 | 17/23 | 16/21 | 17/23 |
| Horsepower | 285 hp | 310 hp | 310 hp | 355 hp | 355 hp | 355 hp |
| Torque | 305 lb-ft | 348 lb-ft | 348 lb-ft | 383 lb-ft | 383 lb-ft | 383 lb-ft |
| Engine | 4.3L V6 flex-fuel (FFV) | 2.7L I4 gas | 2.7L I4 gas | 5.3L V8 gas | 5.3L V8 gas | 5.3L V8 gas |
| Seating | 3 | 6 | 6 | 6 | 5 | 5 |
| Drivetrain | RWD | RWD | RWD | RWD | 4WD | RWD |
| Cargo (cu ft) | — | — | — | — | — | — |
| Max towing | 9,900 lbs | 11,200 lbs | 11,200 lbs | 11,200 lbs | 9,200 lbs | 9,500 lbs |
Specifications shown for each trim’s base configuration; drivetrain, cab, and box options vary within a trim, and MSRP shows the full range. MSRP excludes destination fees, taxes, and dealer-installed options.
Full specifications
Shown for each trim's base configuration. Drivetrain, cab, and box options within a trim can change dimensions, capacities, and fuel economy.
Engine & drivetrain
- Engine type
- Baseflex-fuel (FFV)SLEgasElevationgasSLTgasAT4gasDenaligas
- Fuel type
- Baseflex-fuel (unleaded/E85)SLEregular unleadedElevationregular unleadedSLTregular unleadedAT4regular unleadedDenaliregular unleaded
- Cylinders
- BaseV6SLEI4ElevationI4SLTV8AT4V8DenaliV8
- Displacement
- Base4.3 LSLE2.7 LElevation2.7 LSLT5.3 LAT45.3 LDenali5.3 L
- Horsepower
- Base285 hpSLE310 hpElevation310 hpSLT355 hpAT4355 hpDenali355 hp
- Torque
- Base305 lb-ftSLE348 lb-ftElevation348 lb-ftSLT383 lb-ftAT4383 lb-ftDenali383 lb-ft
- Transmission
- Base6-speed shiftable automaticSLE8-speed shiftable automaticElevation8-speed shiftable automaticSLT8-speed shiftable automaticAT410-speed shiftable automaticDenali8-speed shiftable automatic
- Drivetrain
- Baserear wheel driveSLErear wheel driveElevationrear wheel driveSLTrear wheel driveAT4four wheel driveDenalirear wheel drive
Dimensions
- Body type
- BaseTruck (Regular Cab)SLETruck (Double Cab)ElevationTruck (Double Cab)SLTTruck (Crew Cab)AT4Truck (Crew Cab)DenaliTruck (Crew Cab)
- Doors
- Base2SLE4Elevation4SLT4AT44Denali4
- Seating
- Base3SLE6Elevation6SLT6AT45Denali5
- Length
- Base229.6 inSLE231.8 inElevation231.8 inSLT231.7 inAT4231.7 inDenali231.7 in
- Width
- Base81.2 inSLE81.2 inElevation81.2 inSLT81.2 inAT481.2 inDenali81.2 in
- Height
- Base75.6 inSLE75.6 inElevation75.6 inSLT75.5 inAT478.4 inDenali75.5 in
- Wheelbase
- Base139.6 inSLE147.4 inElevation147.4 inSLT147.4 inAT4147.4 inDenali147.4 in
- Ground clearance
- Base8.1 inSLE7.9 inElevation8.5 inSLT7.9 inAT410.9 inDenali7.9 in
Capacity & weight
- Max towing
- Base9,900 lbsSLE11,200 lbsElevation11,200 lbsSLT11,200 lbsAT49,200 lbsDenali9,500 lbs
- Max payload
- Base2,250 lbsSLE2,060 lbsElevation2,060 lbsSLT2,040 lbsAT42,080 lbsDenali2,040 lbs
- Curb weight
- Base4,520 lbsSLE4,700 lbsElevation4,700 lbsSLT4,820 lbsAT45,140 lbsDenali4,820 lbs
- Fuel tank
- Base28 galSLE24 galElevation24 galSLT24 galAT424 galDenali24 gal
Fuel economy & EV
- Combined MPG
- Base17SLE21Elevation21SLT19AT418Denali19
- City MPG
- Base16SLE20Elevation20SLT17AT416Denali17
- Highway MPG
- Base21SLE23Elevation23SLT23AT421Denali23
| Spec | Base | SLE | Elevation | SLT | AT4 | Denali |
|---|---|---|---|---|---|---|
| Engine & drivetrain | ||||||
| Engine type | flex-fuel (FFV) | gas | gas | gas | gas | gas |
| Fuel type | flex-fuel (unleaded/E85) | regular unleaded | regular unleaded | regular unleaded | regular unleaded | regular unleaded |
| Cylinders | V6 | I4 | I4 | V8 | V8 | V8 |
| Displacement | 4.3 L | 2.7 L | 2.7 L | 5.3 L | 5.3 L | 5.3 L |
| Horsepower | 285 hp | 310 hp | 310 hp | 355 hp | 355 hp | 355 hp |
| Torque | 305 lb-ft | 348 lb-ft | 348 lb-ft | 383 lb-ft | 383 lb-ft | 383 lb-ft |
| Transmission | 6-speed shiftable automatic | 8-speed shiftable automatic | 8-speed shiftable automatic | 8-speed shiftable automatic | 10-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | rear wheel drive | rear wheel drive | rear wheel drive | rear wheel drive | four wheel drive | rear wheel drive |
| Dimensions | ||||||
| Body type | Truck (Regular Cab) | Truck (Double Cab) | Truck (Double Cab) | Truck (Crew Cab) | Truck (Crew Cab) | Truck (Crew Cab) |
| Doors | 2 | 4 | 4 | 4 | 4 | 4 |
| Seating | 3 | 6 | 6 | 6 | 5 | 5 |
| Length | 229.6 in | 231.8 in | 231.8 in | 231.7 in | 231.7 in | 231.7 in |
| Width | 81.2 in | 81.2 in | 81.2 in | 81.2 in | 81.2 in | 81.2 in |
| Height | 75.6 in | 75.6 in | 75.6 in | 75.5 in | 78.4 in | 75.5 in |
| Wheelbase | 139.6 in | 147.4 in | 147.4 in | 147.4 in | 147.4 in | 147.4 in |
| Ground clearance | 8.1 in | 7.9 in | 8.5 in | 7.9 in | 10.9 in | 7.9 in |
| Capacity & weight | ||||||
| Max towing | 9,900 lbs | 11,200 lbs | 11,200 lbs | 11,200 lbs | 9,200 lbs | 9,500 lbs |
| Max payload | 2,250 lbs | 2,060 lbs | 2,060 lbs | 2,040 lbs | 2,080 lbs | 2,040 lbs |
| Curb weight | 4,520 lbs | 4,700 lbs | 4,700 lbs | 4,820 lbs | 5,140 lbs | 4,820 lbs |
| Fuel tank | 28 gal | 24 gal | 24 gal | 24 gal | 24 gal | 24 gal |
| Fuel economy & EV | ||||||
| Combined MPG | 17 | 21 | 21 | 19 | 18 | 19 |
| City MPG | 16 | 20 | 20 | 17 | 16 | 17 |
| Highway MPG | 21 | 23 | 23 | 23 | 21 | 23 |
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