2024 Gmc Sierra 2500hd Denali. We've tested a sierra 2500hd denali with the diesel engine, which returned 17 mpg on the highway. Check out the new towing capacities for all model configurations right here.
Explore the 2025 gmc sierra 2500 hd & 3500 hd denali luxury truck. Customize your gmc sierra 2500hd or 3500hd denali.