New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 blends heavy-duty performance with premium off-road and technology features. Powered by the Duramax 6.6L V8 turbodiesel engine paired with a 10-speed automatic transmission, this four-wheel drive crew cab is engineered for strength and capability, including towing-intensive tasks. The 2-speed active transfer case and the factory-installed Gooseneck/5th Wheel Prep Package enhance this truck's readiness for serious hauling and trailer integration.

The AT4 trim emphasizes off-road capability through the X31 Off-Road Package, which includes skid plates and off-road suspension tuning, and its visually distinguished by a gloss black grille with black grille insert bars. Practical additions like hill descent control, LED smoked amber roof marker lamps, and off-road high-clearance steps (LPO) further bolster its utility in rugged environments.

Inside, the cabin is outfitted with Jet Black leather upholstery accented by Kalahari stitching and features a floor-mounted center console. Front and rear premium floor liners with removable carpet inserts help protect the interior from mud and debris. Technology and convenience are central to the Sierra 2500HD AT4s design. A 15-inch multicolor head-up display keeps critical information within the drivers line of sight. The HD Surround Vision system, rearview auto-dimming mirror with camera functionality, Bed View Camera with trailer camera provisions, and Trailer Side Blind Zone Alert enhance driver awareness and towing safety.

Comfort extends to all passengers with heated and ventilated front seats and heated outboard seats in the second row. Dual-zone automatic climate control ensures a consistent interior environment, and the power sunroof adds natural light and ventilation. Connectivity is supported by multiple USB ports (including Type-C), wireless phone projection, and a wireless charging pad. The Bose premium 7-speaker audio system delivers quality sound, while SiriusXM with 360L offers a wide range of entertainment options.

Convenience features include keyless open and start, a remote vehicle starter system, a power sliding rear window, and a universal home remote. Driver-assistance systems include rear cross traffic alert, ultrasonic front and rear park assist, and a safety alert seat. The AT4 Preferred Package and AT4 Premium Plus Package bundle these advanced features for a well-equipped configuration.

The bed is protected with a spray-on bedliner featuring the GMC logo and is equipped with LED cargo area lighting and a 120-volt power outlet for tools or gear. Deep-tinted glass, electric rear-window defogger, and rain-sensing wipers improve visibility in challenging conditions.

This vehicle is covered by the Walt Massey 3 Day Money Back Guarantee. If you decide it's not the right fit, you may return it within three business days before 5 p.m. CST to the dealership where it was purchased, provided it remains in "like new" condition and has been driven fewer than 300 miles. If the mileage exceeds 300, a \$1.00 per mile fee will apply for the additional distance.

With a combination of power, off-road readiness, luxury appointments, and integrated trailering technologies, the 2025 GMC Sierra 2500HD AT4 is designed to meet the demands of serious work and everyday usability.


Price includes: $1000 - Buick & GMC Select Market Incremental Consumer Cash. Exp. 08/04/2025