Used 2021 GMC Sierra 3500 HD Crew Cab Pickup 4D 8 Ft
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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 | $27,000 | $30,900 | ||
Very Good | $26,600 | $30,500 | ||
Good | $26,200 | $30,000 | ||
Fair | $25,200 | $28,900 |
Estimated Trade-In Values for the 2021 GMC Sierra 3500 HD Crew Cab Pickup 4D 8 ft range from about $25,200 to $27,000 depending on vehicle condition. Estimated Private Party Values range from about $28,900 to $30,900 depending on vehicle condition. Valid for ZIP Code 23112 through 6/24/2026.
Specifications
Dimensions, Weights & Capacities
Curb Weight | 7352 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 | 10.4 inches | ||
Overall Length | 266.1 inches | ||
Front Shoulder Room | 66.0 inches | ||
Towing Capacity, Maximum | 16300 lbs. | ||
Turning Diameter | 57.0 feet | ||
Wheel Base | 172.0 inches | ||
Truck Bed Volume | 76 cu.ft. | ||
Bed Length | 8.00 feet | ||
Gross Vehicle Weight Rating (GVWR) | 14000 lbs. | ||
Payload Capacity | 6610 lbs. |
Exterior
Alloy Wheels | Available | ||
|---|---|---|---|
Number of Doors | 4 doors | ||
Privacy Glass | Available | ||
LED Headlights | 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 | 6 years / 100000 miles |
2021 GMC Sierra 3500 HD Crew Cab Pickup 4D 8 ft Standard Features
2021 GMC Sierra 3500 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 3500 HD Crew Cab
KBB.com Consumer Reviews
Consumer Rating
2021 GMC Sierra 3500 HD Crew Cab Pickup 4D 8 ft Safety
Safety Features & Technology
Compare to Similar Vehicles
 Used 2021 GMC Sierra 3500 HD Crew Cab Pickup 4D 8 ft |  Used 2021 Chevrolet Silverado 1500 |  Used 2023 GMC Sierra 1500 Crew Cab |  Used 2021 Ram 1500 Trucks | ||
|---|---|---|---|---|---|
| Price | $31,400 | $30,800 | $32,800 | $29,400 | |
| KBB.com Rating | 4.2 | 4.3 | 4.3 | 4.5 | |
| Consumer Rating | 4.2 | 3.8 | 3.9 | 4.3 | |
| Fuel Economy | N/A | City 16/Hwy 22/Comb 18 MPG | City 16/Hwy 20/Comb 17 MPG | City 15/Hwy 21/Comb 17 MPG | |
| Fuel Type | Gas | N/A | Gas | N/A | |
| Safety Rating | N/A | 5.0 | N/A | 5.0 | |
| 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 | 355 @ 5600 RPM | 355 @ 5600 RPM | 395 @ 5600 RPM | |
| Engine | V8, 6.6 Liter | V8, EcoTec3, DFM, 5.3 Liter | V8, EcoTec3, DFM, 5.3 Liter | V8, HEMI, 5.7 Liter | |
| Drivetrain | 4WD | 4WD | 4WD | 4WD |