2024 Gmc At4x 2500hd. Detailed specs and features for the 2024 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. Gmc is building on the at4 legacy with the first ever sierra hd at4x and at4x.

Detailed specs and features for the 2024 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. It starts at $81,900 and inflates to $103,075 with all.