Command the toughest jobs and longest hauls with the 2026 GMC Sierra 2500HD AT4X, a diesel-powered 4x4 crew cab built for power, precision, and comfort in every terrain.

Designed for drivers who demand strength and reliability, the Sierra 2500HD AT4X is equipped with a turbocharged 8-cylinder diesel engine paired with a sophisticated 10-speed automatic transmission, delivering exceptional torque and towing capability. Its locking limited-slip differential and 4-wheel drive system ensure maximum traction on rugged or slippery surfaces, while integrated tow hooks and a factory-installed tow hitch make heavy-duty hauling effortless.

Inside, the cabin offers premium leather seats with heating, cooling, and massage functions, plus adjustable lumbar support and memory settings for both driver and passenger, ensuring comfort during long drives. The advanced Aerial View Display System and heads-up display provide critical information and enhanced visibility, while safety technologies like blind spot monitoring, front collision mitigation, lane departure warning, and cross-traffic alert keep you confident on every journey.

Outside, the Onyx Black exterior is complemented by power retractable running boards, an integrated tailgate step, and a durable bed liner, all designed to make loading and unloading easier. With remote engine start, WiFi hotspot, and smart device integration, the Sierra 2500HD AT4X combines rugged capability with modern convenience for the discerning Canadian driver.