2026 GMC Sierra 2500HD Denali Ultimate Crew Cab 4WD

This 2026 GMC Sierra 2500HD Denali Ultimate in Onyx Black is a 4WD Crew Cab powered by the Duramax 6.6L V8 turbodiesel and a 10-speed automatic transmission, delivering impressive towing and hauling strength. The Denali Ultimate trim offers a premium experience with the X31 Off-Road Package, Gooseneck/5th Wheel Prep, and advanced trailering technology. Inside this Sierra, you'll find Alpine Umber full-grain leather seats with 16-way power adjustments, heating, ventilation, and memory for both front seats. The heated steering wheel, heated outboard rear seats, dual-zone climate control, and power sunroof add comfort. The 15-inch multicolor head-up display, Bose 12-speaker audio, wireless charging, and the GMC Premium Infotainment System with Apple CarPlay, Android Auto, and SiriusXM with 360L keep you connected and entertained. Safety is a priority with HD Surround Vision, lane departure warning, rear cross traffic alert, trailer side blind zone alert, ultrasonic park assist, a safety alert seat, and a security system. Hill descent control and trailer-specific features support confident towing. The exterior features 22-inch painted black wheels, a signature Denali Ultimate grille in Vadar Chrome, spray-on bedliner, LED cargo lighting, smoked amber roof marker lamps, power sliding rear window, and deep-tinted glass, giving this Sierra a commanding and refined presence.