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Removal Procedure

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    Fig 1: Drive Motor Generator Power Inverter Module Cover, Bolt And Electrical Connector
    GM1966180Courtesy of GENERAL MOTORS CORP.
  1. Remove the intake manifold sight shield, as required. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. If replacing one of the rear 2 ignitions coils on the right side perform steps 3 through 13, otherwise proceed to step 14.
    3. WARNING:

    Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

    The High Voltage Disabling procedure will perform the following tasks:

    • Identify how to disable high voltage.
    • Identify how to test for the presence of high voltage.
    • Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

    Failure to follow the procedures exactly as written may result in serious injury or death.

  3. Perform the service disconnect. Refer to High Voltage Disabling .
  4. Disconnect the engine wiring harness electrical connector (3) from the drive motor generator power inverter module cover.
  5. Loosen the drive motor generator power inverter module cover bolt (1).
  6. Remove the drive motor generator power inverter module cover (2).
    7. Fig 2: 3-Phase Cable Clip Nut And Engine Bracket
    GM1965809Courtesy of GENERAL MOTORS CORP.
  7. Remove the generator control module 3 phase cable clip nut (1).
  8. Remove the generator control module 3 phase cable clip from the engine bracket (2).
  9. Reposition the generator control module 3 phase cables out of the way.
  10. Remove the right wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side .
    11. Fig 3: Engine Bracket, Nut And Bolts
    GM1965810Courtesy of GENERAL MOTORS CORP.
  11. Working through the wheel opening, remove the engine bracket bolts (2).
  12. Lower the vehicle.
  13. Remove the engine bracket nut (1) from the ignition coil bracket stud and remove the bracket (3).
    14. Fig 4: Ignition Coil Wiring Harness Electrical Connector
    GM1707122Courtesy of GENERAL MOTORS CORP.
  14. Disconnect the ignition coil wiring harness electrical connector (1) from the ignition coil.
    15. Fig 5: Ignition Coil And Bracket
    GM1707124Courtesy of GENERAL MOTORS CORP.
  15. Remove the spark plug wire from the ignition coil.
    • Twist the spark plug wire boot a 1/2 turn.
    • Pull only on the boot in order to remove the wire from the ignition coil.
  16. Remove the ignition coil bolts.
  17. Remove the ignition coil from the bracket.
  18. There are 2 different manufacturers for the ignition coils and coil brackets. They are as follows:
    19. Fig 6: Melco & Delphi Ignition Coil
    GM260177Courtesy of GENERAL MOTORS CORP.
  19. The Melco® (1) ignition coil is a square design.
  20. The Delphi® (2) ignition coil is a round design.
    21. Fig 7: Ignition Coil Mounting Brackets
    GM260077Courtesy of GENERAL MOTORS CORP.
  21. The Melco® ignition coil bracket (1) is a square design.
  22. The Delphi® ignition coil bracket (2) is a round design.
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