Command the road and worksite with the 2026 GMC Sierra 2500HD AT4 – a diesel-powered, 4x4 crew cab pickup designed for power, precision, and comfort in every rugged endeavour.

Built for those who demand serious capability, the Sierra 2500HD AT4’s turbocharged V8 diesel engine pairs with a smooth 10-speed automatic transmission to deliver impressive torque and towing strength. Its locking limited-slip differential and 4-wheel drive system ensure confident traction on any terrain, while integrated tow hooks and a tow hitch make hauling heavy loads effortless. The bed liner and integrated tailgate step add practicality for loading and unloading gear.

Inside, the cabin balances rugged durability with refined comfort. Heated and cooled leather bucket seats with adjustable lumbar support and memory settings keep driver and passengers comfortable during long hauls or tough conditions. Advanced safety technologies such as blind spot monitoring, front collision mitigation, lane departure warning, and adaptive cruise control provide peace of mind on every journey. The aerial view display and rear parking aid enhance manoeuvrability in tight spots.

With premium features like a heated steering wheel, power folding mirrors, and a premium sound system with smart device integration, the Sierra 2500HD AT4 is engineered to meet the needs of professionals who demand toughness without compromising on modern convenience.