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.

To convince the transmission control module that a working automatic was still installed and clear the fourteen-odd diagnostic codes, [Dean] put together a block of eight common automotive relays.

More GM truck owners are reaching out to GM Authority stating that they've been waiting weeks and possibly even months for a fix, with no clear timeframe.

Owners will need to drop their Chevy, GMC or Caddy down to their local dealer who will upgrade the transmission control module software.

Some units of the 2021 Corvette Stingray may require a transmission control module reprogramming, per a new GM service update.

Comparing features of the latest stand-alone automatic transmission control modules. Which one will work best for your transmission? Jeff Smith breaks it down.

The transmission’s computer, the transmission control module (TCM), takes all of this into account to strategize the ideal shift and clutch pressure, so if any one input is missing, it won’t ...

The module is covered for ten years/240,000 km, but Ford said that if necessary, it will replace the module at no charge for up to six months, even if the warranty has expired.

In the wake of transmission concerns in its Fiesta and Focus sedans and hatchbacks, Ford announced plans to extend warranty coverage on key hardware.