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Home >> Pontiac >> 2009 >> G8 GXP, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 6.0L, 6.2L - Introduction >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
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Removal Procedure

    NOTE: It is necessary to record the remaining engine oil life. If the replacement module is not programmed with the remaining engine oil life, the engine oil life will default to 100 percent. 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. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Fig 1: Identifying ECM & Retaining Clips
    GM1951050Courtesy of GENERAL MOTORS CORP.
  4. Release the ECM retaining clips (1) and detach the ECM (2).
  5. Fig 2: Identifying ECM Electrical Connectors
    GM1951051Courtesy of GENERAL MOTORS CORP.
  6. Move the connector lock levers to the unlock position and disconnect the ECM electrical connectors (1).
  7. Fig 3: Identifying ECM
    GM1950737Courtesy of GENERAL MOTORS CORP.
  8. Remove the ECM from the vehicle.