OEM 2010 Cadillac STS Engine Control Module

2010 Cadillac STS Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2010 Cadillac STS?

  A: Vehicle replacement of the Engine Control Module (ECM) should begin with turning off the ignition system to avoid connector problems and power errors that could harm internal components. Touching either the case of the control module to battery voltage or its connector pins and soldered components will lead to damage from both electrostatic discharge and metal case contact. Check the control module connector surfaces for any debris before servicing while verifying the gaskets maintain the necessary installation to stop contaminants from entering. No programming of engine oil life and automatic transmission fluid life exists in the new module and this results in default values of 100 percent which trigger an oil change at 5000 km (3,000 mi) and transmission fluid change at 83000 km (50,000 mi). Start the replacement process by using a scan tool to obtain fluid life percentages which should be recorded before disconnecting the negative Battery Cable. The first step requires users to unlock the engine wiring harness connectors from the ecm while removing retainers from the ecm bracket before removing the ecm. When you need to replace the ecm bracket you should press the locking tabs to make it accessible. The installation process starts with sliding the ecm bracket until the locking tabs secure and follows by guiding the ecm into position while both components fit the retainers. Reestablish the engine wiring harness connectors to the ecm and return the negative Battery Cable. Proceed by programming the ecm if required. Turn off the ignition system for at least five seconds before moving forward after programming finishes.