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Home >> Saturn >> 2004 >> Ion Red Line >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Introduction) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Removal Procedure
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Removal Procedure

  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 Disconnect/Connect Procedure in Engine Electrical.
  3. Disconnect the 3 powertrain control module (PCM) harness connectors from the PCM, noting proper orientation.
  4. Use the retaining tab to release the PCM from the underhood junction block bracket.
    5. Fig 1: View Of PCM
    GM1381712Courtesy of GENERAL MOTORS CORP.
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