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

Built to conquer the toughest tasks, the Sierra 3500HD AT4 boasts a robust turbocharged 8-cylinder diesel engine paired with a smooth 10-speed automatic transmission and advanced 4x4 drivetrain. Whether hauling heavy loads or navigating challenging terrain, its locking limited-slip differential and tow hooks ensure maximum traction and control. The integrated tailgate step and power retractable running boards provide effortless access to the bed, which is protected by a durable liner, making loading and unloading more efficient.

Inside, the crew cab offers premium leather bucket seats with heating, cooling, and adjustable lumbar support for both driver and passenger, ensuring comfort on long hauls. The seat memory feature recalls your preferred settings, while heated rear seats keep passengers cozy. Safety is paramount with lane departure warning, blind spot monitoring, front collision mitigation, and an aerial view display system that enhances visibility around the vehicle.

Advanced technology like adaptive cruise control, navigation system, WiFi hotspot, and a premium sound system keep you connected and entertained. Finished in striking Onyx Black with aluminum wheels, the Sierra 3500HD AT4 combines rugged capability with sophisticated style, ready to tackle any challenge on or off the road.