2026 GMC Sierra 2500

Meet the 2026 GMC Sierra 2500HD AT4X, a premium heavy-duty truck engineered for those who demand capability, luxury, and refined performance in a full-size package. - Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque - 10-Speed Automatic transmission with 4WD for commanding control - Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin harness - Bose Premium Series 12-Speaker System with wireless phone projection - 15-inch diagonal Head-Up Display with multicolor customization - Heated and ventilated front seats with 16-way power adjustment and full grain leather - Bed View Camera with dual trailer camera provisions and trailer side blind zone alert - Spray-on pickup bedliner with GMC Logo and LED cargo area lighting - Remote vehicle starter system with keyless open and start capability - Power sunroof and power sliding rear window with defogger - 2-Speed Active Transfer Case with Hill Descent Control - SiriusXM 360L trial subscription for three years - Multiple USB ports with wireless charging pad and 120-volt power outlets - Advanced safety suite including automatic emergency braking and forward pedestrian braking The Sierra 2500HD AT4X delivers serious capability wrapped in genuine luxury. Its Duramax diesel engine provides the torque and pulling power you need for towing and heavy work, while the 10-speed automatic ensures smooth acceleration and efficient cruising on any terrain. The 4WD system with 2-Speed Active Transfer Case and Hill Descent Control handles challenging conditions with confidence, whether you're navigating remote job sites or unpredictable weather. Inside the cabin, genuine leather seating, heated and ventilated front seats, and 16-way power adjustment create a commanding driving environment. The 15-inch Head-Up Display keeps critical information at your line of sight, while the Bose audio system with wireless phone projection transforms your daily commute or long hauls into an enjoyable experience. Multiple power outletsâincluding 120-volt optionsâand USB charging ports keep your devices powered and connected. The Gooseneck/5th Wheel Prep Package demonstrates this truck's towing versatility. With hitch platform capabilities and stamped bed holes with removable caps, you're ready to connect serious trailers. The integrated 7-pin bed-mounted trailer harness, trailer tire pressure monitoring, and advanced camera system with trailer viewing provisions simplify complex towing operations. Safety technology integrates seamlessly throughout the design. The Bed View Camera with dual trailer provisions, Rear Cross Traffic Alert, Trailer Side Blind Zone Alert, and Ultrasonic Front and Rear Park Assist give you complete visibility. The automatic emergency braking system and forward pedestrian braking provide additional confidence in any driving situation. OnStar services remain capable, keeping you connected to assistance when needed. This 2026 AT4X represents a meaningful investme