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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.8L - Introduction (2 Of 2) >> Repair Instructions >> Ignition Control Module Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: Identifying Ignition Control Module Wiring Harness Electrical Connector.
    GM1686624Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  3. Loosen the bolt (2) securing the ignition control module (ICM) wiring harness electrical connector.
  4. Remove the ICM wiring harness electrical connector from the ICM.
    5. Fig 2: Identifying Spark Plug Wires
    GM1693864Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the rear spark plug wires (1) from the ignition coils.
  6. Disconnect the front spark plug wires (2) from the ignition coils.
    7. Fig 3: Identifying ICM wiring harness ground nut
    GM1686625Courtesy of GENERAL MOTORS CORP.
  7. Remove the ICM wiring harness ground nut (1).
  8. Remove the ICM wiring harness ground (2) from the stud.
    9. Fig 4: View Of ICM bracket nuts
    GM1693837Courtesy of GENERAL MOTORS CORP.
  9. Remove the ICM bracket nuts.
  10. Remove the ICM bracket from the studs.
  11. Place the ICM assembly on a clean work surface.
    12. Fig 5: Identifying Ignition Coil & Bolts
    GM1693822Courtesy of GENERAL MOTORS CORP.
  12. Remove the ignition coil bolts.
  13. Remove the ignition coils from the ICM.
    14. Fig 6: View Of ICM & Bracket
    GM1693880Courtesy of GENERAL MOTORS CORP.
  14. Remove the ICM from the bracket.
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