New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 blends heavy-duty capability with advanced technology and off-road equipment. Powered by the 6.6L Duramax V8 Turbo Diesel engine paired with a 10-speed automatic transmission, this 4WD Crew Cab configuration is designed for drivers who need serious towing and trail performance, while offering the comfort and refinement of a premium truck.

Equipped with the X31 Off-Road Package, the Sierra 2500HD AT4 is well-prepared for rough terrain. This package incorporates off-road tuned suspension components and skid plates, as well as Hill Descent Control for better downhill performance on uneven ground. The 2-speed active transfer case further supports traction across challenging surfaces. Functional and stylish Off-Road High Clearance Steps add protection and ease of access.

For trailer hauling, this truck includes a Gooseneck/5th Wheel Prep Package and Trailer Cam Provisions with Trailer Viewing Software, along with Trailer Side Blind Zone Alert and Rear Cross Traffic Alert to support awareness when maneuvering with a load. The Bed View Camera and HD Surround Vision provide multiple camera angles to support parking and trailering, and Ultrasonic Front and Rear Park Assist adds proximity sensing around the truck. A spray-on bedliner with the GMC logo and LED cargo area lighting improve utility and durability in the truck bed.

The cabin offers a high level of refinement with Jet Black leather seating enhanced by Kalahari accents. Both front seats are heated and ventilated, and the rear outboard seats are heated as well. The floor-mounted center console provides storage and accessibility, while front and rear premium floor liners with removable carpet inserts help preserve the interior. Wireless phone projection, wireless charging, and SiriusXM with 360L trial enhance connectivity and entertainment, and a Bose 7-speaker premium audio system upgrades the in-cabin listening experience.

Driver-assist features include a Safety Alert Seat, a multicolor 15-inch diagonal Head-Up Display, and an Inside Rearview Auto-Dimming Rear Camera Mirror. Also part of the Technology Package are rain-sensing wipers and the latest digital display technologies. Keyless open and start, a remote vehicle starter system, a power sunroof, and the universal home remote add further convenience.

Charging ports are abundant, with USB connections in the front console and rear seat area, along with 120-volt outlets in both the instrument panel and truck bed for added flexibility on job sites or while camping. The Power Sliding Rear Window with defogger and deep-tinted glass help manage airflow and cabin comfort.

The AT4 Premium Plus and AT4 Preferred Packages group many of these features for a well-equipped configuration, while the Preferred Equipment Group 4SB defines the core of the AT4 trim's unique appearance and functional elements.

For added peace of mind, every vehicle at Walt Massey is backed by the 3 Day Money Back Guarantee. If the vehicle is returned in like-new condition within three business days of purchase, and driven fewer than 300 miles, an exchange is guaranteed. If the mileage exceeds 300, a fee of \$1.00 per additional mile will be applied. This policy gives you the freedom to be sure your new Sierra 2500HD is the right fit for your needs.


Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 09/02/2025