"Rugged, capable, and refined - the 2026 GMC Sierra 2500HD AT4X is engineered to conquer any terrain. Powered by the robust Duramax 6.6L V8 Turbodiesel engine, this truck delivers an impressive 470 horsepower and 975 lb-ft of torque, providing the muscle you need for the toughest jobs. - 6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible) (Includes (K05) Engine Block Heater) (470 hp 350.5 kW @ 2800 rpm, 975 lb-ft of torque 1322 Nm @ 1600 rpm) - 12 Speakers - Bose Premium Series 12-Speaker System - Premium audio system: Premium GMC Infotainment System - High Approach Stamped Steel AEV Front Bumper - Stamped Steel AEV Rear Bumper - 120-Volt Bed Mounted Power Outlet - Heads-Up Display - Off-Road Suspension - Spray-on Pickup Bedliner with GMC Logo - Apple CarPlay/Android Auto - Automatic Emergency Braking - Bed View Camera with Two Trailer Camera Provisions - Forward Collision Alert - Front Pedestrian Braking - HD Surround Vision - Heated steering wheel - Multicolor 15"" Diagonal Head-Up Display - Trailer Cam Provisions and Trailer Viewing Software - Trailer Side Blind Zone Alert - Ultrasonic Front and Rear Park Assist This Sierra 2500HD AT4X is meticulously equipped to handle any adventure. With its exceptional off-road capabilities, premium interior features, and advanced safety technologies, it's the ultimate choice for those seeking uncompromising performance and capability. Experience the power and refinement of the 2026 GMC Sierra 2500HD AT4X today."