New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is designed for those who require heavy-duty capability paired with off-road readiness and advanced in-cabin technology. Outfitted with a 6.6L V8 engine and 10-speed automatic transmission, this Crew Cab 4WD truck is built to perform on demanding job sites, trails, or highways. The X31 Off-Road Package adds specific hardware tuned for rugged terrain, including off-road suspension components and skid plates. A 2-speed active transfer case and Hill Descent Control contribute to confident handling in low-traction conditions.

Inside, the Sierra 2500HD AT4 features a high-utility yet premium interior finished in Jet Black leather with Kalahari accents. Heated and ventilated front seats and heated rear outboard seats enhance comfort, while dual-zone automatic climate control, a floor-mounted center console, and premium floor liners with removable inserts contribute to a functional, well-appointed cabin. The multicolor 15-inch head-up display delivers critical driving information within the drivers line of sight, and the interior also includes a 120-volt power outlet on the instrument panel and bed, allowing support for tools and electronics on the go.

Connectivity and entertainment are powered by the Bose Premium 7-speaker audio system and the GMC Infotainment system with Wireless Apple CarPlay, Android Auto, and Wireless Phone Projection. Additional convenience features include wireless charging, a universal home remote, SiriusXM with 360L, keyless open and start, and a power sunroof.

The AT4 Premium Plus Package and Technology Package together elevate the safety and towing technologies offered. HD Surround Vision, Rear Cross Traffic Alert, Trailer Side Blind Zone Alert, Ultrasonic Front and Rear Park Assist, and a Safety Alert Seat work in tandem to support awareness on and off the road. Trailering is further enhanced by the Gooseneck/5th Wheel Prep Package, Trailer Camera Provisions with Trailer Viewing Software, and the Bed View Camera, all designed to support secure trailer handling. The inclusion of the AT4 Preferred Package also adds aesthetic and functional upgrades, including gloss black grille elements, smoked amber roof marker lamps, and rain-sensing wipers.

Utility is reinforced with practical touches like deep-tinted glass, a power sliding rear window with defogger, rear wheelhouse liners, LED cargo lighting, spray-on bedliner with GMC logo, and Off-Road High Clearance Steps. Numerous USB ports throughout the cabin and remote start functionality further reflect the Sierra 2500HD AT4s attention to everyday usability and convenience.

For added peace of mind, the Sierra 2500HD AT4 is covered by the Walt Massey 3 Day Money Back Guarantee. This policy allows buyers to return the vehicle within three business days if it remains in like-new condition and has fewer than 300 miles. If the vehicle exceeds 300 miles, a \$1.00 per mile charge applies. This guarantee provides flexibility and confidence as you evaluate whether the Sierra 2500HD AT4 meets your needs.


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