New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is designed for those seeking both off-road capabilities and premium-level interior refinement in a heavy-duty truck. Built with a Duramax 6.6L V8 turbodiesel engine paired with a 10-speed automatic transmission, this four-wheel drive Crew Cab is equipped to handle demanding work tasks, off-road terrain, and long-distance hauling with confidence.

This Sierra 2500HD AT4 is finished in Summit White and features a Jet Black interior with Kalahari leather accents. Its off-road-ready design is supported by the X31 Off-Road Package, which includes skid plates, off-road suspension, and Hill Descent Control. A 2-speed active transfer case enhances traction options for diverse terrain, while Off-Road High Clearance Steps add utility and protection.

Technology plays a central role in this truck's configuration. The available 15-inch multicolor diagonal Head-Up Display delivers essential vehicle data directly within the drivers line of sight. The Technology Package also includes HD Surround Vision and a Bed View Camera with trailer camera provisions, offering expanded visibility for towing and maneuvering. The AT4 Premium Plus Package adds features such as a power sunroof, Bose Premium 7-speaker sound system, and ventilated front seats, delivering comfort in any climate.

Inside, the Sierra AT4 combines rugged utility with premium convenience. Heated front and rear outboard seats, dual-zone climate controls, and wireless charging help enhance comfort for driver and passengers alike. USB ports are thoughtfully distributed throughout the cabin, including data and charge-only ports, as well as ports inside the center console. A rearview camera mirror with auto-dimming, a universal home remote, and remote start are also included for daily convenience.

For towing needs, this truck is equipped with both the Gooseneck/5th Wheel Prep Package and Trailer Cam Provisions with Trailer Viewing Software. Trailer Side Blind Zone Alert and Rear Cross Traffic Alert improve awareness during highway driving and when backing up with a load. The spray-on bedliner with GMC logo, 120-volt bed-mounted and interior power outlets, and LED cargo area lighting provide functional advantages for jobsite use or recreational loading.

Additional exterior enhancements include deep-tinted glass, gloss black grille accents, LED roof marker lamps, and a power sliding rear window with defogger. The rear seat area features premium floor liners with removable carpet inserts for ease of cleaning, a feature also mirrored in the front.

As with all new vehicles sold at Walt Massey, this Sierra 2500HD AT4 is backed by the 3 Day Money Back Guarantee. If youre not satisfied with your purchase, you can return the vehicle within three business days before 5 p.m. CST to the original dealership. The truck must be in like-new condition and driven fewer than 300 miles. Vehicles exceeding the 300-mile limit may still be returned, subject to a \$1.00 per mile usage fee beyond the threshold.

The 2025 Sierra 2500HD AT4 offers a blend of off-road capability, towing functionality, and upscale features that make it suitable for both rugged environments and everyday driving.

Not all rebates may apply. Some rebates are not compatible with other rebates. Offers are subject to change. See dealer for details. Price includes: $1000 - Buick & GMC Select Market Incremental Consumer Cash. Exp. 08/04/2025 $500 - GM Military Cash Allowance Program. Exp. 01/02/2026