The 2021 GMC Sierra 3500HD Denali combines serious heavy-duty capability with the premium appointments and distinctive styling of GMC’s flagship Denali trim. Designed for demanding towing and hauling while maintaining a refined, comfortable cabin, the Sierra 3500HD Denali is equally at home pulling a large trailer or serving as a well-appointed everyday truck.

The Denali trim sets this heavy-duty Sierra apart with premium interior materials, upscale exterior detailing, and a cabin designed around both comfort and functionality. Heated and ventilated front seating, premium trim, advanced infotainment, and thoughtful storage provide the refinement expected from the Denali name while maintaining the durability of a one-ton pickup.

Where the Sierra HD really distinguishes itself is its trailering technology. GMC’s ProGrade Trailering System provides useful tools for connecting and managing a trailer, while HD Surround Vision and available trailer-camera technology were designed to improve visibility around the truck and trailer. The MultiPro Tailgate adds another layer of versatility with multiple configurations for loading, accessing, and working from the cargo bed.

Built for owners who need genuine heavy-duty capability without sacrificing comfort, the 2021 GMC Sierra 3500HD Denali delivers the upscale Denali experience in a truck engineered for substantial towing, hauling, and long-distance travel.