The TCM, or Transmission Control Module, is a key piece of any automatic transmission. Here's how it works in your car and how to fix it.

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 programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.

Spartan Fire LLC (Spartan Fire) is recalling certain 2022-2024 Gladiator, Metro Star, FC-94 and KME Panther firetrucks. After the vehicle is reversed, the transmission control module (TCM) may ...

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.

From there, the aftermarket transmission control module (TCM), which is mounted in the car like any normal ECU, can control the shifting based on just a few easily inputted signals such as ...