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Home >> Chevrolet >> 2009 >> Malibu Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.4L >> Repair Instructions >> Engine Control Module Replacement (LAT) >> Removal Procedure

Removal Procedure

    Fig 1: View Of Body Wiring Harness Electrical Connector & Engine Control Module (ECM)
    GM1889665Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LZ4, LY7, and LE5) or Battery Negative Cable Disconnection and Connection (LAT) .
  3. Disconnect the body wiring harness electrical connector (1) from the engine control module (ECM).
    4. Fig 2: Locating Engine Wiring Harness Electrical Connectors & ECM
    GM1889666Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the engine wiring harness electrical connectors (2) from the ECM.
  5. Remove the engine wiring harness clips (3) from the ECM bracket (4).
    6. Fig 3: View Of Engine Wiring Harness & Retainers
    GM1889667Courtesy of GENERAL MOTORS CORP.
    NOTE: Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables or when charging the vehicles battery.
  6. Gently lift the ECM retainers (1) up, disengaging the retainers from the ECM (2).
  7. Tilt the ECM towards the engine and remove the ECM (2) from the bracket.
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