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Used 2021 GMC Sierra 2500 HD Crew Cab SLT Pickup 4D 6 1/2 Ft
Columbus, OH
43085
4.2
Expert
3.6
Consumer
Pricing
Important Info & Definitions
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Specifications
Dimensions, Weights & Capacities
Curb Weight | 6852 lbs. | ||
|---|---|---|---|
Fuel Capacity | 36.0 gallons | ||
Front Head Room | 43.0 inches | ||
Front Leg Room | 44.5 inches | ||
Max Seating Capacity | 5 | ||
Minimum Ground Clearance | 10.1 inches | ||
Overall Length | 250.1 inches | ||
Front Shoulder Room | 66.0 inches | ||
Towing Capacity, Maximum | 14500 lbs. | ||
Turning Diameter | 52.7 feet | ||
Wheel Base | 158.9 inches | ||
Truck Bed Volume | 61 cu.ft. | ||
Bed Length | 6.50 feet | ||
Gross Vehicle Weight Rating (GVWR) | 10650 lbs. | ||
Payload Capacity | 3760 lbs. |
Exterior
Alloy Wheels | Available | ||
|---|---|---|---|
Fog Lights | Available | ||
HID Headlights | Available | ||
Moon Roof/Sun Roof | Available | ||
Number of Doors | 4 doors | ||
Privacy Glass | Available | ||
LED Headlights | Available |
Mechanical
Drivetrain | 4WD | ||
|---|---|---|---|
Transmission Type | Automatic | ||
10 speed | Available | ||
Recommended Fuel | Diesel | ||
Hill Descent Control | Available | ||
Hill Start Assist | Available | ||
Parking Assist System | Available |
Performance
Horsepower | 445 @ 2800 RPM | ||
|---|---|---|---|
Torque | 910 @ 1600 rpm | ||
Engine | V8, Turbo Diesel, 6.6 Liter |
Warranty
Basic | 3 years / 36000 miles | ||
|---|---|---|---|
Powertrain | 5 years / 100000 miles | ||
Corrosion | 6 years / 100000 miles |
2021 GMC Sierra 2500 HD Crew Cab SLT Pickup 4D 6 1/2 ft Standard Features
2021 GMC Sierra 2500 HD Crew 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 Crew Cab
KBB.com Consumer Reviews
3.6
Consumer Rating
16 ratings
Value
3.9
Performance
4.2
Quality
3.6
Comfort
4.3
Reliability
3.6
Styling
4.1
2021 GMC Sierra 2500 HD Crew Cab SLT Pickup 4D 6 1/2 ft Safety
Safety Features & Technology
4.0
Crash Test Rating
Provided by the National Highway Traffic Safety Administration
Frontal Crash
3.0
Side Barrier
5.0
Rollover Rating
3.0
Side Crash
5.0
Compare to Similar Vehicles
 Used 2021 GMC Sierra 2500 HD Crew Cab SLT Pickup 4D 6 1/2 ft |  New 2025 Hyundai Santa Cruz |  New 2026 Toyota Tundra Double Cab |  New 2026 Chevrolet Silverado 1500 Regular Cab | ||
|---|---|---|---|---|---|
| Price | $45,700 | $44,245 | $43,685 | $44,295 | |
| KBB.com Rating | 4.2 | 4.2 | 4.1 | 4.3 | |
| Consumer Rating | 3.6 | 4.5 | 3.4 | 3.8 | |
| Fuel Economy | N/A | City 19/Hwy 27/Comb 22 MPG | City 18/Hwy 23/Comb 20 MPG | City 17/Hwy 21/Comb 19 MPG | |
| Fuel Type | Diesel | Gas | Gas | Gas | |
5 Year Cost To Own 5-Year Cost to Own includes out of pocket expenses like fuel and insurance, plus the car’s loss in value over time (depreciation). | N/A | $63,642 | $61,441 | $67,283 | |
| Safety Rating | 4.0 | 5.0 | N/A | 5.0 | |
| Seating Capacity | 5 | 5 | 5 | 3 | |
| Basic Warranty | 3 years or 36000 miles | 5 years or 60000 miles | 3 years or 36000 miles | 3 years or 36000 miles | |
| Horsepower | 445 @ 2800 RPM | 281 @ 5800 RPM | 348 @ 5200 RPM | 310 @ 5600 RPM | |
| Engine | V8, Turbo Diesel, 6.6 Liter | 4-Cyl, Turbo, GDI, 2.5 Liter | V6, i-FORCE, Twin Turbo, 3.4 Liter | 4-Cyl, TurboMax, 2.7 Liter | |
| Drivetrain | 4WD | AWD | 2WD | 4WD |
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