Gmc Trucks 2025 Models. View information about specs and features. 2025 gmc sierra 2500hd and 3500hd pickup trucks equipped with the denali ultimate trim are the only truck in gmc’s lineup that come standard with the 6.6l l5p.
Detailed specs and features for the 2025 gmc sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. View and learn more about the professional grade lineup of trucks, suvs, crossovers, vans, and evs.
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