PCM / Module Replacement Depending on your vehicle, you may be able to replace the PCM yourself using a replacement product from Dorman or FlagshipOne.

The power control module, aka PCM, manages the engine, transmission and other systems based on information it receives from various sensors around the vehicle.

The photos show how easy it was for us to relocate the TFI module on our 5.0L (we used a high-dwell Dyna Module from Performance Distributors) to the driver-side inner- fender wall of the engine bay.