New 2025 GMC Sierra 2500HD AT4

Description for 2025 GMC Sierra 2500HD AT4 Truck

The 2025 GMC Sierra 2500HD AT4 is designed to handle both rugged terrain and refined travel with equal confidence. Built around a 6.6L Duramax V8 turbodiesel engine paired with a 10-speed automatic transmission, this heavy-duty 4WD truck delivers the torque and control required for demanding towing, hauling, and off-road conditions.

This Crew Cab variant comes equipped with the X31 Off-Road Package, which enhances trail capability with features like hill descent control and a 2-speed active transfer case. The AT4 trim also includes high-clearance off-road steps and a specially tuned suspension. A Gooseneck/5th Wheel Prep Package further supports heavy-duty towing, and the Trailer Cam Provisions with Trailer Viewing Software and Trailer Side Blind Zone Alert provide excellent visibility and safety when trailering. The truck's spray-on bedliner with a GMC logo, LED cargo lighting, and 120-volt outlets in the bed and instrument panel add to its work-ready functionality.

On the tech front, this Sierra 2500HD offers a high level of driver assistance and connectivity. The Technology Package adds a 15-inch multicolor head-up display and HD Surround Vision system for enhanced situational awareness. Additional safety enhancements include Rear Cross Traffic Alert, Ultrasonic Front and Rear Park Assist, and a Safety Alert Seat. The Inside Rearview Auto-Dimming Rear Camera Mirror provides a digital rearview option for unobstructed visibility, especially useful when the bed or trailer limits your view.

Inside, the cabin is trimmed in Jet Black leather with Kalahari accents and offers both heated and ventilated front seats, along with heated second-row outboard seating. A floor-mounted center console, premium floor liners with removable carpet inserts, and a power sunroof contribute to comfort and practicality. The Bose premium 7-speaker sound system, wireless charging, and wireless phone projection ensure that entertainment and connectivity are always accessible.

The Sierra 2500HD AT4 also comes with convenience features such as remote vehicle start, keyless open and start, power front passenger windows with express functionality, a power sliding rear window with defogger, and a universal home remote. Rain-sensing wipers and deep-tinted glass add to the vehicle's thoughtful design for varying weather and privacy needs.

This vehicle includes the AT4 Preferred Package and AT4 Premium Plus Package, layering in added features for enhanced comfort, technology, and towing support.

As with all qualifying vehicles, this Sierra 2500HD AT4 is backed by the Walt Massey 3 Day Money Back Guarantee. Buyers may return the vehicle to the dealership within three business days before 5 p.m. CST, provided it is in like-new condition and has been driven fewer than 300 miles. If the vehicle has been driven more than 300 miles, a \$1.00 per mile fee will apply beyond that limit. This policy ensures you have time to evaluate your purchase with confidence.


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