GM issues a service update for 2025-2026 GMC Sierra and Savana models to replace the fuel pump power control module, ...

Eric Witt is jumping ship from his GMC Sierra. Why is he down on GM? He's debating the toughest truck choice: Ford, Ram, or ...

Diesel Exhaust Fluid has an expiration date, after which it becomes far less effective and can even damage your engine.

The 2026 Sierra 1500 offers a broad variety of options, and now, GM Authority is taking a closer look at all of the 2026 GMC ...