New 2025 GMC Sierra 2500HD Denali Ultimate

Description for 2025 GMC Sierra 2500HD Denali Ultimate Truck

The 2025 GMC Sierra 2500HD Denali Ultimate is a heavy-duty truck designed to combine work-ready capability with high-end refinement. This configuration is powered by the Duramax 6.6L V8 turbodiesel engine, mated to a 10-speed automatic transmission and a 4WD drivetrain. It comes equipped with a 2-speed active transfer case and the X31 Off-Road Package, which enhances off-road durability and control. The Gooseneck/5th Wheel Prep Package and Trailer Camera Provisions with Trailer Viewing Software make this truck well-suited for advanced towing operations, while integrated features like the Trailer Side Blind Zone Alert and Trailer Tire Pressure Monitor Sensors help improve trailering safety and confidence.

Inside the crew cab, the cabin is outfitted with Alpine Umber full-grain leather and premium materials throughout, reflecting the Denali Ultimate trims focus on craftsmanship and comfort. The power sunroof and rear sliding window with defogger increase cabin versatility, while deep-tinted glass adds privacy and solar protection. The front seats are both heated and ventilated, and second-row outboard seats are also heated, promoting year-round comfort for all passengers. A floor-mounted center console and rear wheelhouse liners contribute to organized utility and durability.

Technology integration is a central focus. The centerpiece of the dash is a multicolor 15-inch diagonal head-up display that projects key information directly in the drivers field of view. Additional visual support comes from the HD Surround Vision system and the Bed View Camera, which includes provisions for trailer-mounted views. A Bose Premium Series 12-speaker sound system enhances the audio experience, while Wireless Apple CarPlay and Android Auto are supported through the advanced infotainment system. Wireless charging and several USB ports throughout the cabin keep devices powered on the move.

Key driver aids and safety systems include Rear Cross Traffic Alert, a Safety Alert Seat, Ultrasonic Front and Rear Park Assist, and Trailer Side Blind Zone Alert. The vehicle is also equipped with OnStar capability and a theft-deterrent system. Visibility enhancements include LED smoked amber roof marker lamps and LED cargo area lighting.

Convenience features include keyless open and start, push-button start, remote vehicle starter system, and universal home remote. The inclusion of a 120-volt outlet in both the bed and the instrument panel expands options for worksite or campsite power needs.

All of these features are backed by the Walt Massey 3 Day Money Back Guarantee. If you decide the vehicle isn't the right fit, you're guaranteed an exchange as long as the vehicle is returned in like-new condition within three business days before 5 p.m. CST, and has been driven fewer than 300 miles. Vehicles driven more than 300 miles may still be returned, but a fee of \$1.00 per mile over the limit will apply.

The 2025 Sierra 2500HD Denali Ultimate offers a comprehensive suite of advanced features, trailering technology, and luxury-grade refinement for drivers needing serious capability without compromising comfort.

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