You will need to retrieve the percentage of remaining engine oil and the remaining automatic transmission fluid life using a scan tool, record the remaining engine oil and the remaining automatic transmission fluid life, slide the
Engine Control Module (ECM) retainer rearward, disengage the retainer from the battery shield, remove the ECM retainer from the top of the battery shield, and remove the ECM from the retainer, then place the ECM on the battery shield, disconnect the negative battery cable, and then disconnect the engine wiring harness electrical connectors from the ECM.