2025 Gmc 3500hd Duramax Diesel. With changes to your rail pressure curve, adjusting mass airflow requirements,. The 2025 sierra 2500hd i drove featured the duramax diesel and the prograde trailering system.
With changes to your rail pressure curve, adjusting mass airflow requirements,. Edmunds also has gmc sierra 3500hd pricing, mpg, specs, pictures, safety features, consumer reviews and more.