Priced at $55,990, this vehicle is within the current market price range of $49,600 to $58,200.
It has 69,262 miles, which is 26,138 (27%) below the median mileage of 95,400.
Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.
View Full Value Report| Sequence | Date | Price Change | Current Price |
|---|---|---|---|
| 1. | 9/23/2025 (7 months ago) | $58,990 | |
| 2. | 12/2/2025 (4 months ago) | -$1,500 (-2.5%) | $57,490 |
| 3. | 12/15/2025 (4 months ago) | -$1,000 (-1.7%) | $56,490 |
| 4. | 1/24/2026 (3 months ago) | -$500 (-0.9%) | $55,990 |
2021 GMC SIERRA 3500 DENALI 4WD CREW CAB FEATURES A DURAMAX 6.6L TURBO-DIESEL WITH ALLISON 10-SPEED AUTO, X31 OFF-ROAD SUSPENSION, AUTO LOCKING REAR DIFF, HEATED & VENTILATED FRONT SEATS, REAR 60/40 FOLDING BENCH, AND LEATHER WRAPPED HEATED STEERING WHEEL. TECHNOLOGY INCLUDES 8'' HD TOUCHSCREEN WITH NAVIGATION, BOSE PREMIUM AUDIO, WIRELESS APPLE CARPLAY & ANDROID AUTO, BED VIEW CAMERA, REMOTE START, AND WIRELESS CHARGING. EXTERIOR HIGHLIGHTS INCLUDE LED HEADLAMPS & FOG LAMPS, SPRAY-ON BEDLINER, GMC MULTIPRO TAILGATE, POWER FOLD/HEATED TRAILER MIRRORS, CHROME ASSIST STEPS, AND WHITE FROST TRICOAT PAINT.
10-Speed Automatic, 4WD, Dark Walnut/Dark Ash Grey Leather. Odometer is 19218 miles below market average!
4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel
All of our vehicles with 60,000 miles or less come with a lifetime powertrain warranty.
* Based on opinions and should be considered as general guidance only.
The 2021 GMC Sierra 3500HD stands as a formidable contender in the heavy-duty pickup truck segment, engineered for those who demand uncompromising capability and robust performance. Whether it's towing substantial trailers, hauling heavy payloads, or tackling demanding work sites, the Sierra 3500HD is built to excel. This overview delves into its key features, ownership experience, potential considerations, and overall value.
Owning a 2021 GMC Sierra 3500HD is an experience characterized by capability and a certain rugged elegance. For daily driving, expect a commanding presence on the road and a comfortable, albeit truck-like, ride. The powerful engines, especially the Duramax diesel, provide effortless acceleration even when heavily loaded. Maintenance will likely involve regular oil changes, tire rotations, and fluid checks, with diesel-specific maintenance like fuel filter replacements being more frequent. Insurance costs can be higher than for lighter vehicles due to the truck's size, power, and repair costs. Resale value for well-maintained heavy-duty trucks like the Sierra 3500HD is generally strong, reflecting their enduring utility.
While the Sierra 3500HD is a highly capable machine, buyers should be aware of a few potential considerations. Its sheer size can make maneuverability in tight urban environments or parking garages challenging. Fuel economy, particularly with the gasoline engine or when towing, will be significantly lower than for smaller vehicles. The ride, while improved, can still be a bit firm when the truck is unloaded, as it's designed to handle heavy payloads. Some advanced features, while beneficial, can add complexity to the vehicle.
The 2021 GMC Sierra 3500HD is a supremely capable and highly versatile heavy-duty pickup truck. It excels in its primary mission of towing and hauling, offering potent engine choices and an impressive array of technology to aid in these tasks. With its well-appointed interior options, especially on higher trims, it also offers a comfortable and refined experience for its segment. While its size and fuel consumption require consideration, for those who need to tackle the toughest jobs, the Sierra 3500HD is a compelling and reliable choice.
