GM Authority

GM Issues Fix For C8 Corvette Transmission Control Module Communication Loss

General Motors has issued a service update to address a problem related to the Transmission Control Module in certain examples of the 2020 and 2021 model-year C8 Corvette Stingray. The problem: in ...
GM Authority

GM Issues Service Update For Chevy Silverado HD, GMC Sierra HD Over TCM Calibration

General Motors has issued a service update to address an issue related to the transmission control module (TCM) in certain examples of the 2020 model year Chevy Silverado HD and GMC Sierra HD pickup ...