Experience the power and precision of the 2026 GMC Sierra 3500HD AT4 Crew Cab 4WD, designed for those who demand rugged capability and refined comfort in every drive.

Built to conquer the toughest tasks, this Sierra 3500HD features a robust 6.6L V8 engine delivering 401 horsepower and 464 lb-ft of torque, paired with a smooth 10-speed automatic transmission and advanced 4x4 drivetrain. Whether towing heavy loads or navigating challenging terrain, the locking limited-slip differential and integrated tow hooks provide unmatched control and confidence. The AT4 trim adds purposeful design elements like running boards, an integrated tailgate step, and aluminum wheels, enhancing both functionality and style.

Inside, the cabin is tailored for long hauls and demanding workdays with heated and cooled leather bucket seats, power-adjustable driver and passenger seats with memory settings, and a heated steering wheel for comfort in all conditions. Advanced safety technologies such as blind spot monitoring, lane departure warning, front collision mitigation, and an aerial view display system ensure peace of mind on every journey.

Equipped with smart connectivity features including navigation, Bluetooth, WiFi hotspot, and a premium sound system, the Sierra 3500HD AT4 keeps you connected and in command, making it the ultimate partner for work and adventure across Canada’s diverse landscapes.