Experience commanding power and advanced capability with the 2026 GMC Sierra 2500HD AT4X in Coastal Dune, designed for demanding work and rugged adventures.

Powered by a Duramax 6.6L Turbo-Diesel V8 engine delivering 470 horsepower and an impressive 975 lb-ft of torque, this 4x4 crew cab truck is built to handle the toughest tasks with ease. The 10-speed automatic transmission ensures smooth shifts and optimal performance, while the locking limited-slip differential enhances traction on challenging terrain. Equipped with a gooseneck/5th wheel prep package, it’s ready for heavy-duty towing, featuring a hitch platform, stamped bed holes, and a bed-mounted 7-pin trailer harness.

Inside, the cabin offers premium comfort with full-grain leather seats in Obsidian Rush, including heated and cooled front seats, heated rear seats, and power-adjustable driver and passenger seats with lumbar support and memory settings. A seat-massage function adds luxury on long hauls. The interior is complemented by a leather-wrapped steering wheel with heating and audio controls.

Safety is comprehensive with features like adaptive cruise control, blind spot monitor, front collision warning and mitigation, lane departure warning, and an aerial view display system for enhanced visibility. Exterior highlights include power retractable running boards, integrated tailgate step, bed liner, and aluminum wheels, all contributing to a durable and functional package for serious drivers.