Experience the power and capability of the 2026 GMC Sierra 3500HD SLE Crew Cab 4x4 with advanced towing technology and rugged off-road features.

Built for demanding work and tough terrain, this Sierra 3500HD is equipped with a Duramax 6.6L Turbo-Diesel V8 engine delivering 470 horsepower and an impressive 975 lb-ft of torque, compatible with B20 diesel. The 10-speed automatic transmission and two-speed active transfer case with electronic Autotrac provide smooth shifting and confident four-wheel drive performance. The truck features a gooseneck and 5th wheel prep package, including a hitch platform and 7-pin trailer harness, making heavy towing easier than ever.

Designed for durability, the Sierra includes spray-on bedliner and skid plates protecting the oil pan, front axle, and transfer case. Aluminum wheels with all-terrain tires and running boards enhance its rugged stance. The outside power-adjustable vertical trailering mirrors are heated, auto-dimming, and include perimeter and auxiliary lighting for improved visibility and safety.

Inside, seating for six with cloth trim and a rear sliding power window offer comfort and convenience. Safety is comprehensive with features such as front collision mitigation, lane departure warning, adaptive cruise control, and multiple airbags. Additional highlights include remote start, LED headlights, cargo bed LED lighting, and an in-vehicle trailering app to assist with your hauling needs.