New 2026 GMC Sierra 2500HD

Experience commanding power and advanced capability with the 2026 GMC Sierra 2500HD AT4 Crew Cab in striking Onyx Black, designed for drivers who demand performance and rugged versatility.

Powered by a robust 6.6L V8 engine with direct injection and variable valve timing, this truck delivers an impressive 401 horsepower and 464 lb-ft of torque, paired with a smooth 10-speed automatic transmission and a 4x4 drivetrain. The Sierra 2500HD AT4 is equipped with a locking limited-slip differential, enhancing traction in challenging conditions. Its heavy-duty chassis features 4-wheel disc brakes, ABS, aluminum wheels, and a tow hitch, while the gooseneck/5th wheel prep package includes a hitch platform and bed-mounted 7-pin trailer harness, making it ideal for serious towing tasks.

Inside, enjoy premium comfort with perforated front leather bucket seats featuring heating, cooling, and adjustable lumbar support for both driver and passenger, plus heated rear seats and seat memory. The cabin’s Jet Black with Kalahari accents complements the rugged exterior. Convenience and safety are paramount, with adaptive cruise control, blind spot monitoring, cross-traffic alert, lane departure warning, automatic high beams, and an aerial view display system. Additional features include a rear sliding power window, roof marker lamps, integrated tailgate step, running boards, and a bed liner—ready for any job or adventure.