2024 Gmc Sierra 2500hd At4. Detailed specs and features for the 2024 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. All trims are available with the roomy crew cab, but only the pro.

The 2024 gmc sierra 2500hd is available in seven trim levels: At4 offers powerful capability engineered to.