2025 Gmc Duramax Specs Lt. Other news, the 6.6 gasser gets the big 10 speed for 2025 and some new color and trim options. Two powerful forces come together.
Detailed specs and features for the 2025 gmc sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. Other news, the 6.6 gasser gets the big 10 speed for 2025 and some new color and trim options.