2026 GMC Sierra 2500

Meet the 2026 GMC Sierra 2500HD AT4X, a heavy-duty truck engineered for those who demand capability and refinement in equal measure. This Onyx Black workhorse combines genuine off-road prowess with premium comfort, making it equally at home on challenging terrain or the highway. - Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque - 10-Speed Automatic transmission with 4WD - AT4X AEV Edition with AEV stamped steel front and rear bumpers featuring recovery points - 18 AEV Salta Black Gloss Aluminum wheels - 2-Speed Active Transfer Case with Hill Descent Control - Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin trailer harness - Upfitter Switch Kit (5) for custom electrical accessory integration - 220-Amp Alternator and Engine Block Heater - Premium GMC Infotainment System with Apple CarPlay and Android Auto - 15 Diagonal Head-Up Display with multicolor graphics - Full Grain Leather seat trim with 16-Way Power adjusters on driver and passenger seats - Heated and ventilated front seats with heated rear outboard seats - Panoramic Moonroof with power operation - HD Surround Vision with Bed View Camera and trailer camera provisions - Mobile Service Plus covering 3 years of service conveniences The Sierra 2500HD AT4X delivers commanding presence through its distinctive design. The AEV-stamped steel bumpers with heavy-duty recovery points signal serious capability, while gloss-black door handles and tailgate accents provide contemporary styling. The spray-on pickup bedliner protects your investment, and the off-road suspension ensures composed handling across varied terrain. Inside, the cab prioritizes both comfort and functionality. The premium audio system features 12 speakers with Bose technology and SiriusXM with 360L trial subscription. Dual-zone climate control with heated steering wheel and memory seat settings ensure driver comfort on long hauls. The wireless charging pad and multiple USB ports keep your devices ready, while the in-vehicle trailering system app gives you real-time control and monitoring capabilities. Safety and connectivity define the Sierra 2500HD AT4X experience. Automatic Emergency Braking, Forward Pedestrian Braking, and Rear Cross Traffic Alert work seamlessly to protect you and your cargo. The Hitch Guidance system simplifies maneuvering with trailers, and OnStar Services keep you connected to assistance when needed. Hill Descent Control provides confidence during steep descents, while the 4-wheel disc anti-lock braking system offers dependable stopping power. The Gooseneck/5th Wheel Prep Package removes installation barriers for serious towing enthusiasts. The integrated hitch platform accepts your choice of hitch configuration, while the bed-mounted 7-pin trailer harness and Trailer Tire Pressure Monitor Sensors deliver comprehensive towing solutions. For customers planning aftermarket modifications, the Upfitter Switch Kit provides configurable electrical circuits for s