2025 GMC Sierra 3500 AT4
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Miles Overview
The 2025 GMC Sierra 3500 is the heavy-duty workhorse of GMC's pickup lineup, built to handle serious towing and payload duties. It squares off against the Ford F-350 Super Duty and Ram 3500 in the heavy-duty truck segment. The Sierra 3500 drives with the commanding presence you expect from a heavy-duty truck, though its size demands respect in tight spots. Inside, the cabin ranges from work-ready vinyl in base trims to the upscale materials of the Denali and Denali Ultimate. Stepping up to the AT4 from the SLE adds off-road hardware like an automatic two-speed transfer case, skid plates, and Rancho shocks, plus unique styling inside and out. Its 6.6L V8 makes 401 horsepower and 464 lb-ft of torque, paired with a ten-speed automatic and four-wheel drive that give you confident traction on pavement and dirt alike.
Vehicle Specs
Miles Overview
The 2025 GMC Sierra 3500 is the heavy-duty workhorse of GMC's pickup lineup, built to handle serious towing and payload duties. It squares off against the Ford F-350 Super Duty and Ram 3500 in the heavy-duty truck segment. The Sierra 3500 drives with the commanding presence you expect from a heavy-duty truck, though its size demands respect in tight spots. Inside, the cabin ranges from work-ready vinyl in base trims to the upscale materials of the Denali and Denali Ultimate. Stepping up to the AT4 from the SLE adds off-road hardware like an automatic two-speed transfer case, skid plates, and Rancho shocks, plus unique styling inside and out. Its 6.6L V8 makes 401 horsepower and 464 lb-ft of torque, paired with a ten-speed automatic and four-wheel drive that give you confident traction on pavement and dirt alike.
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*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
1 day listed
Recently listed; the dealer may be less flexible on price.
21+ active alternatives
Similar vehicles within 500 mi of this listing
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
Fairly Reliable Bob's is a car dealer in Boise, ID.