What is the difference between “ECU” / “ECM” and “PCM”?
ECU is a generic term for 'Electronic Control Unit,' while ECM specifies 'Engine Control Module,' and PCM refers to 'Powertrain Control Module.' In most vehicles, ECM and PCM can be used interchangeably, but in some vehicle applications, they refer to two separate modules. If you have doubts about which module you need, please don't hesitate to contact us.