New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is a heavy-duty pickup designed with off-road capability, advanced towing technology, and luxury-grade interior features. This Crew Cab 4WD configuration is powered by a robust 6.6-liter V8 engine paired with a 10-speed automatic transmission, delivering the torque and control needed for demanding tasks and terrain. Finished in Summit White with Jet Black leather seating accented by Kalahari highlights, this truck balances rugged utility with a refined interior aesthetic.

Built for versatility and equipped with the X31 Off-Road Package, the Sierra 2500HD AT4 offers enhanced off-road suspension, skid plates, hill descent control, and all-terrain capability. The 2-speed active transfer case and off-road high-clearance steps further increase maneuverability and accessibility in tough environments. A spray-on bedliner with the GMC logo, LED cargo area lighting, and rear wheelhouse liners ensure the bed area is ready for work or play.

Inside the cabin, the Sierra AT4 emphasizes driver convenience and technology integration. A 15-inch multicolor diagonal head-up display projects key vehicle data within the drivers line of sight. The cabin includes heated and ventilated front seats, heated second-row outboard seats, and a premium Bose 7-speaker sound system. Comfort extends to details such as a floor-mounted center console, power sunroof, rain-sensing wipers, and a universal home remote.

Connectivity and infotainment are managed through wireless phone projection, SiriusXM with 360L trial subscription, wireless charging, and multiple USB ports including charge/data options inside the center console. The truck includes a 120-volt bed-mounted power outlet and another 120-volt outlet at the instrument panel for added utility on job sites or recreational outings.

Towing and trailering capabilities are a focal point for the Sierra 2500HD AT4. The Gooseneck/5th Wheel Prep Package, Trailer Camera Provisions with Trailer Viewing Software, Bed View Camera, and Trailer Side Blind Zone Alert combine with the HD Surround Vision system to provide enhanced awareness and control when hauling. The AT4 Premium Plus Package and Technology Package include advanced features such as Ultrasonic Front and Rear Park Assist, Safety Alert Seat, Rear Cross Traffic Alert, and an Inside Rearview Auto-Dimming Rear Camera Mirror to aid in visibility and situational awareness.

With keyless open and start, push-button ignition, and remote vehicle start, everyday usability is built into the experience. OnStar services capability and theft-deterrent features like the Unauthorized Entry Theft-Deterrent System add peace of mind for security and connectivity.

As with every new vehicle purchased at Walt Massey, this truck is covered by our 3 Day Money Back Guarantee. If you decide it's not the right fit, you can return it to the dealership within three business days before 5 p.m. CST, provided it's in like-new condition and has been driven less than 300 miles. For any additional mileage beyond that limit, a \$1.00 per mile fee will apply.

The 2025 GMC Sierra 2500HD AT4 brings together the strength of a full-size heavy-duty truck, off-road capability, and modern amenities in a way that suits both work and leisure.


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