2025 Gmc Denali 2025 Duramax Specs. 2025 gmc sierra 2500 and 3500 hd first look: Detailed specs and features for the 2025 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.
Detailed specs and features for the 2025 gmc sierra 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. The sierra 2500hd denali ultimate looks to elevate the brandโs premium status, with a refreshed duramax, a new exterior, and more.