New 2026 GMC Sierra 3500HD

Experience the 2026 GMC Sierra 3500HD SLT in Summit White, engineered for power, capability, and advanced safety on every terrain and job site.

Powered by a Duramax 6.6L Turbo-Diesel V8 engine delivering an impressive 470 hp and 975 lb-ft of torque, this 4x4 crew cab pickup is built to handle heavy towing and demanding workloads. The 10-speed automatic transmission and locking limited-slip differential provide smooth, confident control whether on the highway or off-road. The X31 Off-Road and Protection Package enhances rugged performance with Rancho twin-tube shocks, hill descent control, skid plates, and 20-inch bright face wheels wrapped in all-terrain tires.

Inside, the SLT Premium Package offers heated leather front seats with adjustable lumbar support and memory settings, plus a heated steering wheel for added comfort in colder climates. The multi-functional GMC MultiPro tailgate features six load and access functions, simplifying cargo management. Additional practical touches include a spray-on bedliner, integrated tailgate step, running boards, remote engine start, and keyless entry. Safety is comprehensive with front collision mitigation, lane departure warning, automatic high beams, and multiple airbags. Tow hooks and a gooseneck/5th wheel prep package make heavy hauling straightforward and secure.

Built for drivers who demand strength, versatility, and comfort, the Sierra 3500HD SLT is ready to tackle your toughest challenges.