2024 6.6 Duramax Specs And Features. Detailed specs and features for the 2024 gmc sierra 2500hd diesel denali ultimate including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders,. The 2024 silverado 2500 duramax diesel achieved a result of 18 mpg in our testing.

Take a look at what has changed, and the other features and new front end. Detailed specs and features for the 2024 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.