What is an ECM? The Engine Control Module (ECM) is similar to the ECU but may be used interchangeably in some vehicles. It is responsible for monitoring and regulating engine functions to maintain peak performance and efficiency. ECU (Engine Control Unit): This is the brain of your car's Saturn VUE Hybrid Engine Control Module management system, controlling various functions such as fuel injection, ignition timing, and emissions. PCM (Powertrain Control Module): A more advanced version of...

What is an ECM? The Engine Control Module (ECM) is similar to the ECU but may be used interchangeably in some vehicles. It is responsible for monitoring and regulating engine functions to maintain peak performance and efficiency. ECU (Engine Control Unit): This is the brain of your car's engine management system, controlling various functions such as fuel injection, ignition timing, and emissions. PCM (Powertrain Control Module): A more advanced version of the ECU, the PCM oversees not on...