Horsepower 2024 At4 Gmc 6.6 Horsepower. Detailed specs and features for the 2024 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. Find information on performance, specs, engine, safety and more.

Find information on performance, specs, engine, safety and more. Detailed specs and features for the 2024 gmc sierra 1500 diesel at4 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and.