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Home >> Pontiac >> 2005 >> G6 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.5L (Lx9) - Introduction >> Repair Instructions >> Powertrain Control Module (PCM) Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Removing & Installing PCM
    GM1492082Courtesy of GENERAL MOTORS CORP.
  1. Slide the PCM into the PCM bracket on the front of the battery box.
  2. Push down on the PCM until the retaining tab snaps into place.
    3. Fig 2: View Of PCM Connectors
    GM1492080Courtesy of GENERAL MOTORS CORP.
  3. Connect the engine harness electrical connectors to the PCM.
  4. Rotate the lever locks downward to secure the connectors.
    5. Fig 3: View Of PCM
    GM1492079Courtesy of GENERAL MOTORS CORP.
  5. Connect the body harness electrical connectors to the PCM.
  6. Rotate the lever lock downward to secure the connectors.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    IMPORTANT: Following the PCM reprogramming, the PCM will have to learn the crankshaft position (CKP) variation for misfire diagnostics.
  8. If a NEW PCM was installed, reprogram the PCM. Refer to Powertrain Control Module Programming and Setup in Programming and Setup.
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