Power, precision, and advanced technology combine in the 2026 GMC Sierra 3500HD AT4 Crew Cab 4WD — built for those who demand uncompromising capability.

The Sierra 3500HD AT4 is engineered to handle the toughest jobs with its Duramax 6.6L Turbo-Diesel V8 engine, delivering an impressive 470 horsepower and a commanding 975 lb-ft of torque. This powertrain, paired with a 10-speed automatic transmission and four-wheel drive, ensures confident towing and hauling in any terrain or weather condition. The truck’s locking limited-slip differential enhances traction, making it ideal for off-road challenges or slippery Canadian roads.

Designed with the professional driver in mind, the crew cab offers leather-trimmed, heated and cooled bucket seats with adjustable lumbar support and memory settings, providing comfort during long hauls. The integrated tailgate step and running boards simplify access to the bed, which is protected by a durable liner, perfect for heavy-duty workloads.

Safety is paramount with features like adaptive cruise control, blind spot monitoring, front collision mitigation, and an aerial view display system, giving you peace of mind on every journey. The Sierra 3500HD AT4 blends rugged capability with sophisticated technology, making it the ultimate partner for demanding workdays and adventurous weekends.