New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is engineered for drivers who need heavy-duty strength combined with high-end interior features and off-road capability. This crew cab configuration comes equipped with the robust 6.6L Duramax V8 Turbo-Diesel engine paired with a 10-speed automatic transmission and four-wheel drive, delivering the kind of torque and durability required for serious towing, hauling, or trail-ready performance.

As an AT4 trim, the Sierra 2500HD distinguishes itself with off-road focused enhancements and premium interior details. The X31 Off-Road Package includes features such as hill descent control and skid plates, along with an upgraded suspension to tackle rough terrain. The two-speed active transfer case provides selectable drive modes tailored to changing off-road or towing demands. The off-road high clearance steps are a functional addition for easier access, especially in lifted or uneven environments.

Visually, the exterior receives a rugged treatment with a gloss black grille insert and header, smoked amber roof marker lamps, and 20-inch high gloss black aluminum wheels. The spray-on bedliner with GMC logo not only protects the truck bed but adds a utilitarian finish, while LED cargo lighting improves usability in low-light conditions. A bed view camera and trailer camera provisions integrated with trailer viewing software make hitching and monitoring trailers more manageable, especially when navigating in tight spaces or during backing maneuvers.

Inside, the cabin features Jet Black leather upholstery accented with Kalahari stitching, offering a bold contrast and upscale look. Comfort and convenience are top-tier, with ventilated and heated front seats, heated second-row outboard seats, and memory settings for the driver seat and mirrors. The Bose 7-speaker premium sound system elevates the in-cabin experience, and a wireless charging pad, along with wireless Apple CarPlay and Android Auto phone projection, ensures seamless device connectivity.

Technology is a central theme in this model. The 15-inch multicolor diagonal head-up display projects important driving information onto the windshield for easy reference. The HD Surround Vision system, rear camera mirror with auto-dimming, and Ultrasonic front and rear park assist aid visibility and maneuvering. The Rear Cross Traffic Alert, Trailer Side Blind Zone Alert, and Safety Alert Seat further enhance driver awareness and passive safety.

Other advanced packages included on this Sierra 2500HD AT4 are the AT4 Preferred Package, the AT4 Premium Plus Package, and the Technology Package. Features like the power sunroof, electric rear window defogger, rain-sensing front wipers, and a universal home remote help round out the convenience and luxury experience. The integrated trailer brake controller and in-vehicle trailering systems also support heavy-duty hauling use cases.

The vehicles interior design emphasizes utility and durability, with all-weather floor liners (featuring removable carpet inserts) and a floor-mounted center console for secure storage. Dual 120-volt power outletsone in the bed and one on the instrument panelexpand practical use whether youre at a job site or camp site. Multiple USB ports ensure both front and rear passengers have ample charging options for their devices.

This model is backed by the Walt Massey 3 Day Money Back Guarantee. If the vehicle is returned within three business days in like-new condition and with fewer than 300 miles driven, youre eligible for a full refund. If mileage exceeds 300 miles, a $1.00 per mile fee applies for the overage. This policy gives peace of mind, ensuring satisfaction with your purchase decision.

For those seeking a blend of off-road readiness, premium appointments, and heavy-duty towi Not all rebates may apply. Some rebates are not compatible with other rebates. Offers are subject to change. See dealer for details. Price includes: $500 - GM Mil