2026 GMC Sierra 1500 AT4

Experience the 2026 GMC Sierra 1500 AT4: a powerful, diesel-fuelled 4x4 crew cab truck designed for rugged capability and advanced technology.

The Sierra 1500 AT4 is equipped with a Duramax 3.0L turbo-diesel inline six-cylinder engine delivering 305 horsepower and an impressive 495 lb-ft of torque, perfect for towing and heavy-duty tasks. Its 10-speed automatic transmission with electronic precision shift offers smooth performance and includes tow/haul mode and steering column paddle shifters for enhanced control. The truck’s 4-wheel drive system, locking/limited slip differential, and powertrain grade braking ensure confident handling on any terrain.

Inside, the crew cab comfortably seats five with heated and cooled leather bucket seats, power-adjustable driver and passenger seats with lumbar support, and seat memory for personalized comfort. The multi-zone climate control and heated steering wheel add to the refined driving experience. Advanced safety features include automatic high beams, blind spot monitoring, front collision mitigation, lane keeping assist, and a comprehensive airbag system.

Technology is front and centre with a 15-inch multicolour head-up display, rear camera mirror, bed view camera, and an aerial view display system. Exterior highlights include aluminum wheels, LED headlights, integrated tailgate step, bed liner, and front and rear moulded splash guards. This Sierra 1500 AT4 is built to handle demanding jobs with style and confidence.