2025 Gmc Sierra 2025 Specs. The motortrend buyer's guide has the 2025 gmc sierra 1500 specs you need, from dimensions and cargo space to power and mpgs. Information about the 2025 gmc sierra hd, including availability, changes, specifications, pictures and other details about the 2025 sierra hd pickup truck.

Detailed specs and features for the 2025 gmc sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. There are only marginal changes from 2023.