2009 Cadillac SRX Engine Control Module

You can turn the ignition off, retrieve the percentage of remaining engine oil and automatic transmission fluid life, measure the main relay circuit voltage at the ECM/TCM/IGN fuse, measure the main relay circuit voltage at the TCM/BATT fuse, disconnect the negative battery cable, remove the TCM/BATT fuse and the ECM/TCM/IGN fuse, unlock and disconnect the front engine wiring harness electrical connector, unlock and disconnect the rear engine wiring harness electrical connector, release the locking tabs and remove the ECM.

The procedure is to position and install the ECM bracket, position and install the ECM to the ECM bracket, connect and lock the rear engine wiring harness electrical connector to the ECM, connect and lock the front engine wiring harness electrical connector to the ECM, install the ECM/TCM/IGN fuse and the TCM/BATT fuse, connect the negative battery cable, program the ECM and turn off the ignition.