2020 Denali Duramax

Accompanying the likes of the well-equipped Sierra HD SLT and luxury-lined Sierra HD Denali Duramax trims is a new off-road-oriented AT4 model. With a model-specific suspension setup that includes Rancho shock absorbers, skid plates to protect vital mechanical pieces, a locking rear differential, a dedicated off-road driving mode, and a set of 18-inch Michelin all-terrain tires, the Sierra HD AT4 aims to take on the likes of the heavy-duty Ram Power Wagon and medium-duty Nissan Titan XD Pro-4X.