2007 Cadillac Escalade ESV Engine Control Module

You need to use a scan tool, retrieve the percentage of remaining engine oil and record the remaining engine oil life. Next, you can disconnect the negative battery cable, disengage the engine wiring harness upper electrical connector retainer and remove the connector from the ECM, the engine wiring harness lower electrical connector retainer and remove the connector from the ECM and the retainer tabs securing the ECM to the bracket and remove the ECM.

You need to open the harness. If the diode is taped to the harness, remove all of the tape. Next, you can check and record the current flow direction and orientation of the diode, remove the inoperative diode from the harness with a suitable soldering tool, carefully strip away a section of insulation next to the old soldered portion of the wire(s) and check current flow direction of the new diode, being sure to install the diode with correct bias. Then you can attach the new diode to the wire(s) using 60/40 rosin core solder, reinstall terminal(s) into the connector body if previously removed, and tape the diode to the harness or connector using electrical tape.

You need to install the bottom ECM tabs into the bracket, push the ECM in securing the ECM to the bracket, position the engine wiring harness lower electrical connector and engage the retainer securing the lower connector to the ECM, the engine wiring harness upper electrical connector and engage the retainer securing the upper connector to the ECM, and connect the negative battery cable. If a new ECM was installed, program the ECM.

You need to use the appropriate terminal and follow the instructions in the J-38125 the location of the terminal in the repair tray and the proper crimp tool can be found in the appropriate connector end view.

You need to locate the assist lever on the top of the connector, move the assist lever to the forward position, disconnect the connector from the component, locate the dress cover locking tabs at the corners of the connector and use a small flat-blade tool to release the locking tabs and remove the dress cover. The terminal positive assurance (TPA) is located in the front of the connector. Then you can use a small flat-blade tool to remove TPA from the connector and use the J 38125-213 or the J 38125-556 (GM P/N 12093647) tool to release the terminals by inserting the tool into the terminal release cavity. While holding the removal tool in place, gently pull the wire out of the back of the connector, and always remember never to use force when pulling a terminal out of a connector.