2026 GMC Sierra 3500

Meet the 2026 GMC Sierra 3500HD Denali Ultimate, a premium heavy-duty diesel truck engineered for those who demand capability without compromise.- Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic transmission- 4WD with 2-speed active transfer case and off-road suspension- Snow Plow Prep/Camper Package with 220-amp alternator and skid plates- Gooseneck/5th Wheel Prep Package for serious towing applications- X31 Off-Road Package for enhanced terrain management- Adaptive Cruise Control and advanced driver assistance systems- ProGrade Trailering System with hitch guidance and in-vehicle app- HD Surround Vision and bed view camera with trailer provisions- Android Auto and Apple CarPlay with wireless phone projection- Bose premium 12-speaker audio system with SiriusXM 360L trial- Heated and ventilated premium leather seating for driver and front passenger- Power moonroof and power sliding rear window with defogger- Spray-in bed liner with GMC logo protection- Remote start and keyless open and start capabilityThis Sierra 3500HD Denali Ultimate arrives in striking black exterior with the signature Vader Chrome grille that commands attention on any jobsite or road. The Denali Ultimate trim sets a new standard for heavy-duty luxury, combining functional sophistication with genuine capability. From the 20-inch ultra-bright machined aluminum wheels to the signature design details, every element reflects premium craftsmanship.Inside, the cabin delivers refined comfort through full-grain leather seating, an available power moonroof, and climate control that includes heated and ventilated front seats. The GMC Premium infotainment system provides seamless connectivity, while the multicolor 15-inch head-up display keeps critical information within your line of sight. Wireless charging, multiple USB ports, and 120-volt power outlets throughout the cabin keep your devices connected and ready.The Duramax diesel engine paired with the 10-speed automatic transmission delivers the power and torque you need for serious work. The advanced trailering technology includes trailer side blind zone alert, trailer tire pressure monitoring, and hitch view camera provisions to ensure safe towing and precise maneuvering. With the ProGrade Trailering System and available gooseneck/fifth wheel prep, this truck handles whatever you tow with confidence.This truck is ready for demanding conditions with the Snow Plow Prep/Camper Package featuring skid plate protection and increased electrical capacity. The X31 Off-Road Package, 2-speed active transfer case, and hill descent control provide genuine terrain capability when the job takes you beyond paved roads. Safety technologies including automatic emergency braking, lane departure warning, and the Safety Alert Seat keep you protected at every mile.Stop by Woody Buick GMC of Gurnee, an 11-time GM Dealer of the Year and Mark of Excellence recipient, and Dealer Rater 2025 Dealer of the Year to schedule a test drive! See for yourself why this J.D. Power 2026 Dealer of Excellence is Chicagoland's most awarded dealer. Take advantage of our award-winning service and the best incentives around! We have a 2026 GMC Sierra 3500HD on sale for you!