2008 Cadillac CTS Engine Control Module

First, you need to slide the ECM into the ECM bracket and ensure that the ECM engages the bracket retainers. Then, please connect and lock the engine wiring harness electrical connectors to the ECM. Finally, you should connect the negative battery cable, program the ECM and turn OFF the ignition for a least 5 seconds after the programming event is complete.

First, you need to use a scan tool to retrieve the percentage of remaining engine oil and automatic transmission fluid life. Then, please disconnect the negative battery cable and unlock and disconnect the engine wiring harness electrical connectors from the engine control module (ECM). Finally, you should use the tabs to disengage the retainers on the ECM bracket from the ECM and remove the ECM.