Experience commanding power and advanced technology with the 2026 GMC Sierra 2500HD AT4 4WD Crew Cab, designed for serious work and rugged adventures.

The Sierra 2500HD AT4 is equipped with a robust 6.6L V8 gasoline engine delivering 401 horsepower and 464 lb-ft of torque, paired with a smooth 10-speed automatic transmission and a locking limited-slip differential for superior traction. Its 4x4 drivetrain and tow hitch, complemented by the Gooseneck/5th Wheel Prep Package, make heavy towing and hauling effortless. The truck’s exterior features a bed liner, integrated tailgate step, running boards, and a conventional spare tire, all finished in striking silver with dealer-installed black badging and sport steps for added style and functionality.

Inside, the crew cab comfortably seats five with leather bucket seats that include heated and cooled front seats, heated rear seats, and power-adjustable driver and passenger seats with lumbar support and memory settings. The AT4 Preferred Package adds a rear sliding power window, roof marker lamps, and a universal home remote for convenience.

Safety and driver assistance are front and centre with adaptive cruise control, blind spot monitoring, cross-traffic alert, lane departure warning, front collision mitigation, automatic high beams, and an aerial view display system. The technology package enhances visibility with a rear camera mirror and a multicolour 15-inch head-up display, keeping critical information in your line of sight.

Built for capability and comfort, the Sierra 2500HD AT4 is ready to tackle demanding tasks while keeping you connected and protected on every journey.