New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is designed for drivers who demand a balance of off-road capability, towing strength, and interior refinement in a heavy-duty pickup. This crew cab model, finished in Sterling Metallic with a Jet Black leather interior accented in Kalahari, is powered by a 6.6L Duramax V8 turbodiesel engine paired with a 10-speed automatic transmission and a 4WD system featuring a 2-speed active transfer case. The X31 Off-Road Package and Hill Descent Control enhance traction and control in rugged terrain, while the Gooseneck/5th Wheel Prep Package ensures its ready for demanding towing jobs.

This Sierra AT4 includes both the AT4 Preferred Package and the AT4 Premium Plus Package, expanding its feature set considerably. Comfort features include ventilated and heated front seats, heated rear outboard seats, a power sunroof, and dual-zone automatic climate control. The interior also features floor-mounted center console storage and front and rear premium floor liners with removable carpet inserts. Wireless charging, wireless phone projection, and a Bose Premium 7-speaker sound system enhance convenience and entertainment.

Towing and trailering technologies are a focal point of this trucks capabilities. The Bed View Camera with two trailer camera provisions, Trailer Cam Provisions with Viewing Software, and HD Surround Vision provide improved visibility during hookup and hauling. Trailer Side Blind Zone Alert and Rear Cross Traffic Alert contribute to safer maneuvering, while the integrated trailer brake controller and the advanced 15-inch multicolor head-up display support confidence during towing operations.

Technology features are extensive. This model includes the Technology Package, which adds the head-up display and a rearview auto-dimming camera mirror. A large infotainment display with SiriusXM with 360L and OnStar Services capability ensures connection and entertainment options are up to date. Additional features such as the Universal Home Remote, power sliding rear window with defogger, and remote start system increase everyday usability. The vehicle is also equipped with an unauthorized entry theft-deterrent system for added security.

Exterior enhancements like the Gloss Black grille, LED smoked amber roof marker lamps, LED cargo area lighting, Off-Road High Clearance Steps, and a spray-on bedliner with GMC logo contribute to both aesthetics and durability. The combination of robust design and premium appointments makes this Sierra AT4 well-suited for those who require a heavy-duty truck that performs off-road while offering a high degree of comfort and advanced technology.

Buyers can also take advantage of the Walt Massey 3 Day Money Back Guarantee. If the vehicle is returned within three business days in like-new condition and with fewer than 300 miles, you can exchange it hassle-free. If the mileage exceeds 300 miles, a fee of \$1.00 per additional mile applies. This policy provides added peace of mind when selecting your next truck.

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