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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - 2.0L - Introduction (2 Of 2)) >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Removal Procedure

Removal Procedure

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