2024 Gmc Hd Duramax Fuel Mileage. Here's the average duramax diesel mpg you can expect for popular trucks Edmunds also has gmc sierra 2500hd diesel pricing, mpg, specs, pictures, safety.

The duramax turbodiesel engine combines incredible torque with good fuel economy. Edmunds also has gmc sierra 2500hd diesel pricing, mpg, specs, pictures, safety.