2025 Gmc Sierra 2500 Hd At4. Gmc is unveiling the 2025 sierra heavy duty and the first ever 2025 sierra hd denali ultimate, redefining the power and capability of this dominating truck. Edit location 23917 switch model.
Detailed specs and features for the 2025 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. Tackle city streets and mountain trails in equal confidence with our 2025 gmc sierra 2500 hd crew cab at4 4wd wheel and tire packages.