2026 GMC Sierra 2500HD AT4 Crew Cab 4WD

This 2026 GMC Sierra 2500HD AT4 4WD in Coastal Dune is powered by a Duramax 6.6L V8 turbodiesel paired with a 10-speed automatic, delivering impressive strength and towing capability. Inside this Crew Cab, Jet Black leather-appointed seats with Kalahari accents offer 10-way power adjustments, heating, and ventilation for both front occupants, plus heated second-row outboard seats. The cabin features a Bose 7-speaker premium audio system, 15-inch multicolor head-up display, wireless charging, and a premium GMC infotainment system with Apple CarPlay, Android Auto, and navigation. Dual-zone climate control, a heated steering wheel, and a power sunroof add comfort and convenience. Safety features include HD Surround Vision, forward collision alert, lane departure warning, rear cross traffic alert, trailer side blind zone alert, ultrasonic front and rear park assist, and a safety alert seat. Hitch Guidance with Hitch View, trailer camera provisions, the in-vehicle trailering system app, and the Gooseneck/5th Wheel Prep Package make this Sierra ready for heavy-duty towing, while the X31 Off-Road Package, off-road suspension, and high clearance steps boost off-road capability. The exterior features 20-inch high gloss black 8-spoke aluminum wheels, smoked amber roof marker lamps, deep-tinted glass, LED cargo lighting, spray-on bedliner, and the Black Badging Package. A power sliding rear window and bed view camera add convenience and visibility.