Experience unmatched capability and refined comfort with the 2026 GMC Sierra 3500HD AT4, designed for demanding Canadian roads and heavy-duty tasks.

Built to conquer the toughest jobs, the Sierra 3500HD AT4 boasts a robust turbocharged 8-cylinder diesel engine paired with a smooth 10-speed automatic transmission, delivering exceptional torque and towing power. Its 4x4 drivetrain and locking limited-slip differential ensure superior traction and control, whether navigating rugged terrain or hauling heavy loads. The integrated tow hooks and a factory-installed tow hitch make trailer management effortless.

Inside, this crew cab pickup offers premium leather seating with heated and cooled front seats, adjustable lumbar support, and memory settings for both driver and passenger, ensuring comfort during long hauls or daily drives. The multi-zone climate control and heated rear seats keep all passengers comfortable regardless of the weather.

Safety is paramount with advanced features like automatic high beams, blind spot monitoring, cross-traffic alert, front collision mitigation, lane departure warning, and a comprehensive airbag system. The aerial view display and rear parking aid simplify manoeuvring in tight spaces, while power retractable running boards and an integrated tailgate step provide convenient access to the bed, which is protected by a durable liner.

With its Onyx Black exterior and rugged aluminum wheels fitted with off-road tires, the Sierra 3500HD AT4 combines strength, technology, and luxury for those who demand the best from their truck.