Used 2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 Ft
Pricing
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Values and Prices
Fair Purchase Price is determined by collecting thousands of actual consumer vehicle purchase prices, plus data from national vehicle registration databases and several other reliable third-party sources.
Estimated Values
Condition | Trade-In Value | Private Party Value | ||
|---|---|---|---|---|
Excellent | $46,390 | $49,380 | ||
Very Good | $45,490 | $48,480 | ||
Good | $44,490 | $47,380 | ||
Fair | $41,990 | $44,780 |
Estimated Trade-In Values for the 2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 ft range from about $41,990 to $46,390 depending on vehicle condition. Estimated Private Party Values range from about $44,780 to $49,380 depending on vehicle condition. Valid for ZIP Code 43085 through 3/14/2026.
2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 ft Depreciation
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2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 Ft Annual Depreciation
Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
|---|---|---|---|---|---|
2023 | $12,396 | $66,399 | $63,277 | ||
2024 | $5,018 | $61,381 | $59,056 | ||
2025 | $6,031 | $55,350 | $53,191 | ||
Now | $6,550 | $48,800 | $45,800 |
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2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 Ft Depreciation
Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.
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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 Denali Pickup 4D 6 1/2 ft Standard Features
2021 GMC Sierra 2500 HD Crew Cab
KBB.com Review
Kbb.com Expert Rating
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.
Top models can get expensive. Not up to Ram levels of roominess.
2021 GMC Sierra 2500 HD Crew Cab
KBB.com Consumer Reviews
Consumer Rating
2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 ft Safety
Safety Features & Technology
Crash Test Rating
Compare to Similar Vehicles
 Used 2021 GMC Sierra 2500 HD Crew Cab Denali Pickup 4D 6 1/2 ft |  New 2026 Ram 1500 Quad Cab |  New 2026 Toyota Tundra Double Cab |  New 2025 Ram 2500 Regular Cab | ||
|---|---|---|---|---|---|
| Price | $51,700 | $47,625 | $47,892 | $47,660 | |
| KBB.com Rating | 4.2 | 4.5 | 4.1 | 4.5 | |
| Consumer Rating | 3.7 | 4.3 | 3.4 | 3.9 | |
| Fuel Economy | N/A | City 20/Hwy 25/Comb 22 MPG | City 17/Hwy 22/Comb 19 MPG | N/A | |
| Fuel Type | Diesel | Gas | Gas | Gas | |
| Safety Rating | 4.0 | 5.0 | N/A | N/A | |
| Seating Capacity | 5 | 6 | 5 | 3 | |
| Basic Warranty | 3 years or 36000 miles | 3 years or 36000 miles | 3 years or 36000 miles | 3 years or 36000 miles | |
| Horsepower | 445 @ 2800 RPM | 305 @ 6400 RPM | 389 @ 5200 RPM | 405 @ 5600 RPM | |
| Engine | V8, Turbo Diesel, 6.6 Liter | V6, VVT, eTorque, 3.6 Liter | V6, i-FORCE, Twin Turbo, 3.4 Liter | V8, HEMI, 6.4 Liter | |
| Drivetrain | 4WD | 2WD | 4WD | 2WD |