Transmission Control Module (TCM) faults are not unknown on these early Mazda 3s. Symptoms usually involve erratic shifting, a failure to select gear at all and having the car go into limp-home mode.

A “Check Engine” light on your dashboard could mean anything from a loose gas cap to a wallet-destroying repair in the offing. For [Dean Segovis], his CEL was indicating a fairly serious condition: a ...

A significant number of GM truck and SUV owners remain sidelined due to ongoing delays tied to a backorder on transmission valve bodies, a critical component of the automatic transmission system. At ...

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 ...

If you're a control freak, late-model electronic transmissions are just what you need to modernize your classic car, and if you decide to go that route, a transmission control module is a must-have.

The transmission range sensor is a critical component that monitors gear selection and allows automatic transmissions to shift properly. But when this sensor fails, what repair costs can drivers ...