
2021 GMC Sierra 2500HD AT4
*Estimated taxes and fees. All amounts reflect the dealership’s listing. DriversHub assumes no liability for omissions, inaccuracies, or non‑disclosed fees in dealer‑supplied pricing.
Negotiation Potential
31 days listed
Time on the market may give you some room to negotiate.
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Miles Overview
The Sierra 2500HD is GMC's heavy-duty pickup, built to tow and haul serious loads while offering more comfort than the work-truck norm. It squares off against the Ford Super Duty and Ram Heavy Duty, all three fighting for buyers who need real towing capacity. The steering is direct for a truck this size, and the brakes feel strong even when you're loaded up. Expect a firm ride when empty, which is the trade-off for the payload and towing capability this truck is known for. The cabin is roomy and quiet, with available leather and a large touchscreen that make long hauls more pleasant. The AT4 is the off-road-oriented Sierra 2500HD, for buyers who want the Denali's comfort but need more capability on rough terrain. Its 6.6L I8 makes 401 horsepower and 464 lb-ft of torque, paired with a six-speed automatic and four-wheel drive that give you confident traction on loose surfaces. The AT4 gets a unique suspension with Rancho shocks and skid plates, so it handles rutted trails better than the SLT while still towing well.
Vehicle Specs
Miles Overview
The Sierra 2500HD is GMC's heavy-duty pickup, built to tow and haul serious loads while offering more comfort than the work-truck norm. It squares off against the Ford Super Duty and Ram Heavy Duty, all three fighting for buyers who need real towing capacity. The steering is direct for a truck this size, and the brakes feel strong even when you're loaded up. Expect a firm ride when empty, which is the trade-off for the payload and towing capability this truck is known for. The cabin is roomy and quiet, with available leather and a large touchscreen that make long hauls more pleasant. The AT4 is the off-road-oriented Sierra 2500HD, for buyers who want the Denali's comfort but need more capability on rough terrain. Its 6.6L I8 makes 401 horsepower and 464 lb-ft of torque, paired with a six-speed automatic and four-wheel drive that give you confident traction on loose surfaces. The AT4 gets a unique suspension with Rancho shocks and skid plates, so it handles rutted trails better than the SLT while still towing well.
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Estimated Monthly Payment
$764
6% APR for 72 months
*Estimated taxes and fees. All amounts reflect the dealership’s listing. DriversHub assumes no liability for omissions, inaccuracies, or non‑disclosed fees in dealer‑supplied pricing.
Negotiation Potential
31 days listed
Time on the market may give you some room to negotiate.
16 active alternatives
Similar vehicles nationwide
More available alternatives can strengthen your position.
Ask Miles about this car, what it should cost, and how to handle the dealer.
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About this Dealer
Verified Dealer
Jim Stykemain Chevrolet GMC is a car dealer in Sturgis, MI.

