OEM 2009 Cadillac SRX Engine Control Module

2009 Cadillac SRX Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2009 Cadillac SRX?

  A: Begin the ecm replacement process only if you turn off the ignition because this safety measure protects you from damage. A scan tool must be used to retrieve and document engine oil and automatic transmission fluid life percentages because omitting this programming step in the new module will reset both values to maximum at 5000 km (3,000 mi) and 83000 km (50,000 mi) from the most recent service. Test the main relay circuit function at the ecm/tcm/ign Fuse and tcm/batt Fuse inside the underhood Fuse block using a dvom to verify no voltage exists. Drain power using the negative Battery Cable and remove the tcm/batt and ecm/tcm/ign fuses which exist within the underhood Fuse block. Detach both front and rear engine wiring harness electrical connectors from the ecm by unlocking their locks before removing it from the bracket. A small flat-bladed tool must be used to depress the locking tabs before removing the ecm bracket. To install position the new ecm bracket if needed and secure the ecm onto the bracket by allowing it to connect with locking tabs. After reattaching the rear and front engine wiring harness electrical connectors to the ecm customers should reinstall the ecm/tcm/ign and tcm/batt fuses into the underhood Fuse block. Finish the process by reconnecting the negative Battery Cable while programming the ecm so ensure the ignition stays off for at least five seconds after completing the programming.