2026 GMC Sierra 2500HD

Dealer-supplied vehicle comments. Request current pricing and purchase terms in writing from the dealership.

Come see why driving a GMC isn't just transportation—it's an upgrade to everything you expect on the road. - Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque - 10-Speed Automatic transmission with 4WD - AT4 Premium Plus Package with power sunroof - Power-retractable black assist steps with LED lighting - Gooseneck/5th wheel prep package for heavy hauling - MultiPro tailgate audio system by Kicker - Bose premium 7-speaker sound system - Three years of SiriusXM satellite radio - Thr

ee years of OnStar One services - HD surround vision with bed view camera and trailer camera provisions - Heated and ventilated front seats with 10-way power adjusters - Heated steering wheel and rear seats - 15-inch diagonal head-up display - Wireless phone projection and charging - Off-road high clearance step with hill descent control The 2026 GMC Sierra 2500HD AT4 stands ready for serious work and purposeful driving. This white heavy-duty truck begins with a foundation of capability—the legendary Duramax diesel engine delivers the power and torque you need for towing and hauling, while the 10-speed automatic transmission and intelligent 4WD system handle varied terrain with confidence. The truck's frame and suspension are engineered for the demands of real work, whether you're managing a job site or exploring challenging terrain. The AT4 Premium Plus Package elevates your experience with thoughtful additions that matter. The power sunroof brings light and openness to the cab, while the technology package integrates modern conveniences seamlessly into your daily drive. Power-retractable assist steps with integrated LED lighting make entry and exit practical and visually refined, setting the AT4 apart from standard trucks on every approach. Inside, the cab welcomes you with comfort that sustains long hours behind the wheel. Heated and ventilated front seats adjust through 10 different positions, allowing you to find your ideal driving position. The heated steering wheel and heated rear seats extend comfort to all occupants, while the wireless charging pad and dual USB ports keep your devices ready. The Bose premium audio system and MultiPro tailgate audio system by Kicker deliver quality sound whether you're on the move or parked at your destination. Technology integration keeps you connected and informed. The 15-inch head-up display projects essential information into your line of sight, reducing distractions. The HD surround vision system and bed view camera with trailer camera provisions simplify maneuvering in tight spaces. Three years of SiriusXM and OnStar One keep entertainment and assistance within reach, while wireless phone projection lets you access navigation and communication apps on the truck's display. For those who tow and haul, the gooseneck and 5th wheel prep package transforms the truck into a serious heavy-hauling platform. The hitch package includes a gooseneck ball and chain tiedown kit, while the bed-mounted 7-pin trailer harness stands ready. The in-vehicle trailering system app helps you manage your load and monitor what's behind you. At the end of the day, the right vehicle doesn't just get you where you're going—it changes how you feel getting there. That's exactly what GMC delivers. Smooth, stylish, and packed with features you'll appreciate every single drive. Don't just take our word for it—come experience it for yourself. Stop by today, take a seat behind the wheel, and see why so many drivers are making the switch to GMC. Your next upgrade is waiting. Exp. Exp. 11/02/2026