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Used 2021 GMC Sierra 2500 HD Double Cab SLT Pickup 4D 6 1/2 Ft
Killeen, TX
76540
4.2
Expert
3.8
Consumer
Pricing
Important info & Definitions
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Estimated Payment
$769/Month*
*Estimated payments based on Kelley Blue Book® Fair Purchase Price of $44,681 at 3.19% APR for 60 months with $5,000 down for well-qualified buyers. For illustrative purposes only and not an offer/commitment to provide credit or financing.
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Specifications
Dimensions, Weights & Capacities
Curb Weight | 6765 lbs. | ||
|---|---|---|---|
Fuel Capacity | 36.0 gallons | ||
Front Head Room | 43.0 inches | ||
Front Leg Room | 44.5 inches | ||
Max Seating Capacity | 6 | ||
Minimum Ground Clearance | 10.2 inches | ||
Overall Length | 240.5 inches | ||
Front Shoulder Room | 66.0 inches | ||
Towing Capacity, Maximum | 14500 lbs. | ||
Turning Diameter | 49.5 feet | ||
Wheel Base | 149.4 inches | ||
Truck Bed Volume | 70 cu.ft. | ||
Bed Length | 6.50 feet | ||
Gross Vehicle Weight Rating (GVWR) | 11200 lbs. | ||
Payload Capacity | 3747 lbs. |
Exterior
Alloy Wheels | Available | ||
|---|---|---|---|
Fog Lights | Available | ||
Number of Doors | 4 doors | ||
Privacy Glass | Available |
Mechanical
Drivetrain | 4WD | ||
|---|---|---|---|
Transmission Type | Automatic | ||
6 speed | Available | ||
Recommended Fuel | Regular | ||
Hill Descent Control | Available | ||
Hill Start Assist | Available | ||
Parking Assist System | Available |
Performance
Horsepower | 401 @ 5200 RPM | ||
|---|---|---|---|
Torque | 464 @ 4000 rpm | ||
Engine | V8, 6.6 Liter |
Warranty
Basic | 3 years / 36000 miles | ||
|---|---|---|---|
Powertrain | 5 years / 60000 miles | ||
Corrosion | 3 years / 36000 miles |
2021 GMC Sierra 2500 HD Double Cab SLT Pickup 4D 6 1/2 ft Standard Features
- 12V Power Outlet
- Alarm System
- Bluetooth Streaming Audio
- Bluetooth Wireless Technology
- Cruise Control
- Dual Power Front Seats
- Folding Rear Seat
- Hands Free Phone
- Heated Seats
- Heated Steering Wheel
- Integrated Garage Door Opener
- Internet Access
- Leather Seats
- Leather-Wrapped Steering Wheel
- Navigation System
- Power Driver's Seat
- Power Outlet
- Power Windows
- Premium Radio
- Rear Window Defroster
- Remote Engine Start
- Remote Keyless Entry
- Smartphone Interface
- Steering Wheel Controls
- Tilt Steering Wheel
- Tilt/Telescoping Steering Wheel
- Touch Screen Monitor
- USB Port
- Voice Recognition System
2021 GMC Sierra 2500 HD Double Cab
KBB.com Review
4.2
Kbb.com Expert Rating
You'll Like This Car If...
Big, strong, and powerful. Maximum tow rating of 36,000 pounds. 6.6-liter diesel V8/Allison 10-speed transmission combination. ProGrade trailering system. AT4 off-road model.
You May Not Like This Car If...
Top models can get expensive. Not up to Ram levels of roominess.
2021 GMC Sierra 2500 HD Double Cab
KBB.com Consumer Reviews
3.8
Consumer Rating
12 ratings
Value
4.1
Performance
4.5
Quality
3.8
Comfort
4.6
Reliability
3.8
Styling
4.2
Compare to Similar Vehicles
Used 2021 GMC Sierra 2500 HD Double Cab SLT Pickup 4D 6 1/2 ft | New 2025 Chevrolet Silverado 1500 Crew Cab | Used 2021 Chevrolet Silverado 1500 | Used 2021 Toyota Tundra | ||
|---|---|---|---|---|---|
| Price | $44,996 | $44,695 | $34,687 | $42,702 | |
| KBB.com Rating | 4.2 | 4.3 | 4.3 | 3.9 | |
| Consumer Rating | 3.8 | 3.9 | 3.9 | 4.4 | |
| Fuel Economy | N/A | City 18/Hwy 21/Comb 19 MPG | City 16/Hwy 22/Comb 18 MPG | City 13/Hwy 17/Comb 14 MPG | |
| Fuel Type | Gas | Gas | N/A | N/A | |
| Safety Rating | N/A | 5.0 | 5.0 | 4.0 | |
| Seating Capacity | 6 | 6 | 6 | 6 | |
| Basic Warranty | 3 years or 36000 miles | 3 years or 36000 miles | 3 years or 36000 miles | 3 years or 36000 miles | |
| Horsepower | 401 @ 5200 RPM | 310 @ 5600 RPM | 355 @ 5600 RPM | 381 @ 5600 RPM | |
| Engine | V8, 6.6 Liter | 4-Cyl, TurboMax, 2.7 Liter | V8, EcoTec3, DFM, 5.3 Liter | V8, 5.7 Liter | |
| Drivetrain | 4WD | 2WD | 4WD | 4WD |
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