Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying ECM Middle & Lower Electrical Connectors

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Turn the ignition OFF.
Using a scan tool, retrieve the percentage of remaining engine oil and the remaining automatic transmission fluid life. Record the remaining engine oil and the remaining automatic transmission fluid life.
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
Disconnect the engine wiring harness middle and lower electrical connectors (1) from the ECM.

Fig 2: View Of Engine Wiring Harness Clip & ECM Upper Electrical Connector

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If also replacing the ECM bracket, remove the engine wiring harness clip (2) from the ECM bracket tab.
Disconnect the engine wiring harness upper electrical connector (1) from the ECM.

CAUTION: In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.

Fig 3: Identifying ECM Retaining Tab

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Gently lift up the retaining tab (1) and lift the ECM up and out of the support brackets on the ECM bracket.

Fig 4: View Of ECM Bracket & Bolts

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If necessary, remove the ECM bracket bolts (1) and bracket.