New 2025 GMC Sierra 2500HD Denali Ultimate

Description for 2025 GMC Sierra 2500HD Denali Ultimate Truck

The 2025 GMC Sierra 2500HD Denali Ultimate represents the most feature-rich and technologically advanced version of GMC's heavy-duty pickup lineup. Built for those who need robust towing power and luxury-grade comfort in a single package, this configuration merges performance, off-road capability, and upscale appointments.

At its core is the Duramax 6.6L V8 Turbodiesel engine paired with a 10-speed automatic transmission. Together, this drivetrain delivers the torque and durability needed for demanding tasks, whether it's hauling equipment or towing trailers. The 4WD system with a 2-speed active transfer case, Hill Descent Control, and the X31 Off-Road Package equips the Sierra Denali Ultimate to confidently handle rugged terrain and challenging weather. The Gooseneck/5th Wheel Prep Package, Trailer Cam Provisions with Trailer Viewing Software, and Trailer Tire Pressure Monitor Sensors further emphasize this truck's capabilities in heavy-duty towing applications.

Visually, the Sterling Metallic exterior is accented by the Signature Denali Ultimate grille finished in Vader Chrome, with LED smoked amber roof marker lamps, LED cargo area lighting, and deep-tinted glass providing both form and function. The spray-on bedliner with the GMC logo adds durability and protection for the bed surface, and a power sunroof brings additional openness to the interior.

The cabin is defined by premium Alpine Umber leather upholstery and a range of high-end technologies and comfort features. The front bucket seats are both heated and ventilated, with the second-row outboard seats also offering heating functionality. The floor-mounted center console and power-adjustable front seats support long-distance driving comfort and practicality. Technological enhancements include a multicolor 15" diagonal Head-Up Display, a rearview auto-dimming camera mirror, a Bose Premium Series 12-speaker sound system, and wireless phone projection for seamless Apple CarPlay and Android Auto integration. The vehicle also offers wireless device charging, keyless open and start, and a universal home remote.

Safety and driver assistance are covered extensively. HD Surround Vision provides a bird's-eye view for tight maneuvers, while Trailer Side Blind Zone Alert, Rear Cross Traffic Alert, Safety Alert Seat, and Ultrasonic Front and Rear Park Assist systems enhance awareness in various driving environments. The Theft-Deterrent System helps safeguard the truck when unattended.

Other key utilities include dual 120-volt power outlets (bed-mounted and instrument panel), a power sliding rear window with defogger, rain-sensing wipers, and multiple USB ports for both charging and data transfer. The inclusion of the Technology Package adds to its array of digital and driver-assist features.

For added peace of mind, the Sierra 2500HD Denali Ultimate is covered under the Walt Massey 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, customers may exchange it without penalty. If driven more than 300 miles, a fee of \$1.00 per additional mile will apply.

This truck is ideal for drivers who require uncompromised towing strength and off-road readiness, but also expect refined luxury, advanced technology, and extensive comfort in their vehicle.

Not all rebates may apply. Some rebates are not compatible with other rebates. Offers are subject to change. See dealer for details. Price includes: $500 - GM Military Cash Allowance Program. Exp. 01/02/2026