Gmc Denali 2025 Diesel. With the diesel, the sierra is rated as high as 26 mpg combined by the epa — a. Explore the 2025 gmc sierra 2500 hd & 3500 hd denali luxury truck.
Explore the 2025 gmc sierra 2500 hd & 3500 hd denali luxury truck. Gmc leans on its denali and denali ultimate trims to attract those looking for a side of luxury with their pickup truck, and both ring in at several thousand dollars less than the rival ram.