Experience commanding power and advanced technology with the 2026 GMC Sierra 3500HD Denali Ultimate, designed for heavy-duty performance and premium comfort in every drive.

This new Sierra 3500HD Denali Ultimate features a robust Duramax 6.6L Turbo-Diesel V8 engine, delivering an impressive 470 horsepower and 975 lb-ft of torque, compatible with B20 diesel fuel. Paired with a 10-speed automatic transmission and a 4x4 drivetrain, it offers exceptional towing capability and off-road readiness. The truck is equipped with a Gooseneck/5th Wheel prep package, including a hitch platform and bed-mounted 7-pin trailer harness, making it ideal for serious hauling demands.

The exterior in striking Onyx Black includes power retractable running boards, integrated tailgate step, and all-terrain tires on aluminum wheels, enhancing both utility and style. Inside, the Alpine Umber full-grain leather cabin offers heated and cooled front seats with massage function, power-adjustable driver and passenger seats with lumbar support, and seat memory for personalized comfort. Advanced safety features such as Blind Spot Monitor, Front Collision Mitigation, Lane Departure Warning, and Adaptive Cruise Control provide confidence on every journey. Additional conveniences include an aerial view display system, heads-up display, heated steering wheel, and remote engine start, ensuring a refined and capable driving experience.