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.

Automatic transmissions are highly complex automotive components. They're significantly more complicated and challenging to work on than manual transmissions, which means expensive repairs and ...

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 ...

General Motors has begun a new customer satisfaction program to address an issue with the transmission range control module in certain 2021 model-year Chevy Bolt EV vehicles. The problem: in affected ...