2025 Gmc Sierra At4 Specs. Detailed specs and features for the 2025 gmc sierra 1500 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. Find incentives, rebates, recalls, and warranty specifications.
Select a 2025 gmc sierra at4 and at4x hd to view feature and capability specs on the official site. See body style, engine info and more specs.