New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is designed to meet the demands of drivers who require heavy-duty capability with refined off-road engineering and luxury-level features. Outfitted with the proven Duramax 6.6L V8 Turbodiesel engine and a 10-speed automatic transmission, this 4WD truck delivers impressive towing and hauling power, while also providing a smooth and controlled ride in a variety of conditions. Its advanced 2-speed active transfer case and the integrated X31 Off-Road Package contribute to confident traction and enhanced ground clearance, making this truck suitable for work sites, off-road trails, and long-haul towing.

The exterior of the Sierra 2500HD AT4 stands out in Thunderstorm Gray, complemented by a Gloss Black grille header and smoked amber roof marker lamps that emphasize its rugged stance. The Off-Road High Clearance Steps, LED cargo area lighting, and spray-on bedliner with the GMC logo are practical additions for both durability and ease of use. Gooseneck/5th Wheel Prep Package and trailer camera provisions support the trucks strong towing credentials, while integrated technologies like Hitch Guidance, Trailer Side Blind Zone Alert, and Trailer Viewing Software improve visibility and control when maneuvering large loads.

Inside the crew cab, the AT4 delivers a premium environment with Jet Black leather seats accented in Kalahari tones. Comfort is prioritized with heated and ventilated front seats, heated second-row outboard seats, and dual-zone automatic climate control. The Technology Package brings a high level of digital integration, including a 15-inch multicolor head-up display and an HD Surround Vision system that enhances driver awareness. Connectivity and convenience features include wireless phone projection, a wireless charging pad, multiple USB ports throughout the cabin, and an advanced infotainment system supported by a premium 7-speaker Bose audio system.

The AT4 Premium Plus and Preferred Packages add further value with features like a power sunroof, rear cross traffic alert, Ultrasonic Front and Rear Park Assist, and a safety alert seat. A rear camera mirror and rain-sensing wipers increase clarity and visibility in adverse conditions. Power conveniences such as express up/down front windows, a power sliding rear window, and remote vehicle start make daily use more seamless.

The Sierra 2500HD AT4 also includes thoughtful security measures like the Unauthorized Entry Theft-Deterrent System and a Safety Alert Seat. Utility is bolstered by multiple power outlets including 120-volt ports in the bed and instrument panel, while practical touches like floor liners with removable carpet inserts help keep the interior clean and functional.

For added peace of mind, the purchase of this vehicle is backed by the Walt Massey 3 Day Money Back Guarantee. Under this policy, customers may return the vehicle within three business days of purchase before 5 P.M. CST, provided the truck is returned in "like new" condition with fewer than 300 miles driven. If the mileage exceeds 300, a charge of \$1.00 per additional mile will apply. This return guarantee allows you to buy confidently, knowing that satisfaction is prioritized.

With a blend of high-end technology, off-road enhancements, and serious towing capability, the 2025 GMC Sierra 2500HD AT4 offers a comprehensive package for those needing a heavy-duty truck that performs in all terrains without compromising comfort.


Price includes: $500 - GM Military Cash Allowance Program. Exp. 01/02/2026