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Home >> Chevrolet >> 2004 >> Malibu Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) - 2.2L (L61) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Removal Procedure
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Removal Procedure

    IMPORTANT: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2. Record the preset radio stations.
  3. Turn the ignition OFF.
  4. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    5. Fig 1: Disconnecting PCM Harness Connectors
    GM1239105Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the PCM harness connectors.
  6. Release the retaining tab located in the battery box lower half using a small screwdriver or other suitable tool.
    7. Fig 2: Removing PCM
    GM1239103Courtesy of GENERAL MOTORS CORP.
  7. Remove the PCM by lifting upward after releasing the tab.
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