2026 GMC Sierra 2500HD AT4 Crew Cab 4WD

This 2026 GMC Sierra 2500HD AT4 4WD in Coastal Dune is powered by a 6.6L V8 and a 10-speed automatic, offering the strength and capability needed for tough jobs and off-road adventures. The Crew Cab layout ensures plenty of space for passengers and gear, while the X31 Off-Road Package and off-road suspension deliver enhanced performance on rugged terrain. Inside this Sierra 2500HD, Jet Black seats with Kalahari accents and perforated leather provide a comfortable and upscale feel. Both front seats are 10-way power adjustable with lumbar support, heating, and ventilation. The heated second-row outboard seats, dual-zone climate control, heated steering wheel, and power sunroof add to the comfort. Technology highlights include a 15-inch head-up display, premium GMC infotainment system, Bose 7-speaker audio, wireless Apple CarPlay/Android Auto, wireless charging, and multiple USB ports. Safety features include HD Surround Vision, rear cross traffic alert, trailer side blind zone alert, safety alert seat, ultrasonic park assist, hill descent control, and a security system. The in-vehicle trailering system, bed view camera, hitch guidance, and trailer camera provisions make towing and hauling easier and safer. The exterior stands out with 20-inch high gloss black wheels, black badging, smoked amber roof marker lamps, off-road high clearance steps, spray-on bedliner with GMC logo, LED cargo lighting, and rain-sensing wipers, giving this Sierra a bold and functional look.