2026 GMC Sierra 2500HD AT4X

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

This heavy-duty truck is equipped with a Duramax 6.6L Turbo-Diesel V8 engine delivering an impressive 470 horsepower and 975 lb-ft of torque, paired with a smooth 10-speed automatic transmission and a 4x4 drivetrain for exceptional traction and control. The Gooseneck/5th Wheel Prep Package includes a hitch platform ready to accept gooseneck or fifth wheel hitches, complete with a bed-mounted 7-pin trailer harness, making towing large trailers effortless. The bed liner and integrated tailgate step enhance durability and ease of access, while power retractable running boards provide convenience when entering or exiting the vehicle.

Inside, the spacious crew cab features leather bucket seats with heating, cooling, and massage functions, plus power-adjustable driver and passenger seats with lumbar support and memory settings for personalized comfort. Safety is paramount with features such as automatic high beams, blind spot monitoring, cross-traffic alert, front collision mitigation, lane departure warning, and stability control. Additional amenities include an aerial view display system, heads-up display, heated mirrors, and an auto-dimming rearview mirror to enhance visibility and driver awareness in all conditions. The Sierra 2500HD AT4X is built to handle tough jobs with confidence and comfort.