New 2025 GMC Sierra 2500HD Denali

Description for 2025 GMC Sierra 2500HD Denali Crew Cab

The 2025 GMC Sierra 2500HD Denali is a heavy-duty truck that brings together robust towing capability, advanced technology, and upscale interior refinement. With a 6.6L Duramax V8 turbodiesel engine and a 10-speed automatic transmission, this 4WD crew cab model is designed for high-performance hauling and trailering while maintaining ride comfort and control in diverse conditions.

Its drivetrain includes a 2-speed active transfer case, Hill Descent Control, and the X31 Off-Road Package, enhancing traction and stability in rough or steep terrain. Trailering is a clear focus with features such as the Gooseneck/5th Wheel Prep Package, Bed View Camera with two trailer camera provisions, Integrated Trailer Brake Controller, Trailer Side Blind Zone Alert, Hitch Guidance, Hitch View, and Trailer Viewing Software via the In-Vehicle Trailering System. Rear Wheelhouse Liners and a spray-on bedliner with the GMC logo protect the bed and underbody from road debris and wear.

The Denali trim level emphasizes premium design and comfort, evident in its distinctive signature chrome grille, polished exhaust tip, and LED smoked amber roof marker lamps. Inside, the black leather-appointed cabin features heated and ventilated front seats, heated second-row outboard seats, and a power sunroof. The driver and front passenger benefit from power-adjustable seats, while the rear seat passengers enjoy comfort upgrades and deep-tinted glass for added privacy.

Technology integration is comprehensive. The Sierra 2500HD Denali includes the Technology Package, offering a multicolor 15-inch diagonal head-up display and an inside rearview auto-dimming camera mirror. A wireless charging pad, wireless Apple CarPlay and Android Auto through wireless phone projection, and multiple USB ports throughout the cabin provide connectivity and convenience. The Bose premium 7-speaker sound system delivers high-quality audio, and the SiriusXM with 360L trial subscription adds expansive entertainment options.

Driver assistance and safety features include HD Surround Vision, Ultrasonic Front and Rear Park Assist, Rear Cross Traffic Alert, Safety Alert Seat, and a Theft-Deterrent System with unauthorized entry protection. Keyless Open and Start, Remote Vehicle Starter System, and Push Button Start enhance ease of access and operation.

The Denali Reserve Package adds further refinement, and the Preferred Equipment Group 5SA ensures the inclusion of a well-rounded set of standard and premium features tailored to heavy-duty use with luxury-grade comfort.

This truck is also supported by the Walt Massey 3 Day Money Back Guarantee. If you decide within three business days of purchase (before 5 p.m. CST) that the Sierra 2500HD Denali isn't right for you, you can return it to the dealership in like-new condition. The vehicle must not have any damage, wear, or odors, and must have been driven fewer than 300 miles. If the vehicle exceeds 300 miles, a charge of \$1.00 per additional mile will apply. This guarantee allows buyers to make a confident and informed decision after purchase.

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 Consumer Cash Program. Exp. 09/30/2025 $1000 - GM Bonus Cash. Exp. 09/30/2025