U0100

The GMC Sierra T1XX (2019-Present) is experiencing error code U0100, which indicates a loss of communication with the Engine Control Module (ECM) or a related control module.

The U0100 code indicates a loss of communication with the Engine Control Module (ECM) in a 2019-present GMC Sierra T1XX. This can cause various electronic and performance issues in the vehicle.

The U0100 code indicates a loss of communication with the Engine Control Module (ECM) in a 2019-present GMC Sierra T1XX. This may result in various performance issues and requires diagnosis and resetting.