Power through any challenge with the 2026 GMC Sierra 2500HD AT4 Crew Cab 4WD — a diesel powerhouse designed for rugged capability and refined comfort.

The Sierra 2500HD AT4 is built for drivers who demand strength and precision. Its Duramax 6.6L Turbo-Diesel V8 engine delivers an impressive 470 horsepower and a staggering 975 lb-ft of torque, providing exceptional towing and hauling capacity. The advanced 10-speed automatic transmission and four-wheel-drive system with locking limited-slip differential ensure confident handling on the toughest terrains.

Inside, the cabin offers premium leather bucket seats with heating, cooling, and adjustable lumbar support, ensuring comfort during long hauls or off-road adventures. The driver benefits from seat memory and power adjustments, while rear passengers enjoy heated seating and pass-through access for added convenience.

Safety is paramount, with features like automatic high beams, blind spot monitoring, lane departure warning, front collision mitigation, and cross-traffic alert, giving you peace of mind on every journey. The integrated aerial view display and rear parking aid simplify manoeuvring in tight spaces, while the bed liner, integrated tailgate step, and running boards enhance utility and accessibility. Finished in Summit White with rugged aluminum wheels, this Sierra 2500HD AT4 is ready to tackle any task with confidence and style.