Our 2020 GMC Sierra 3500HD Denali is a full-size heavy-duty pickup truck that combines rugged capability with luxury and comfort. It features a bold, commanding exterior design with a prominent chrome grille, sleek LED headlights, and muscular body lines. Under the hood, it offers a powerful 6.6-liter V8 Duramax diesel engine, delivering impressive towing capacity and performance. Inside, the Denali trim provides a premium interior with leather upholstery, advanced infotainment system with a large touchscreen, premium audio, and numerous driver-assistance features. The truck is designed for those who need serious hauling and towing capabilities without sacrificing luxury.