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Home >> Pontiac >> 2009 >> G6 GXP, 2D Coupe >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - Introduction >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of ECM At Battery Tray
    GM1838645Courtesy of GENERAL MOTORS CORP.
  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 Disconnection and Connection .
  5. Lift and gently pull the ECM up and out of the retainer on the battery tray.
    6. Fig 2: Identifying ECM Wiring Harness Connectors
    GM1838648Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the engine wiring harness electrical connectors (1) from the ECM.
  7. Disconnect the body wiring harness electrical connector (2) from the ECM.
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