GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The following procedure shows the left side service procedure, the right side service procedure is similar.


    Object Number: 1551870  Size: SH
  1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the connector position assurance (CPA) retainer (3).
  3. Disconnect the ignition coil main electrical connector (4).

  4. Object Number: 1411963  Size: SH
  5. Remove the spark plug wire(s) (724) from the ignition coil(s), as necessary.

  6. Object Number: 1402020  Size: SH
  7. Remove the ignition coil bolts (723), as necessary.
  8. Remove the ignition coil(s) (722), as necessary.

Installation Procedure


    Object Number: 1402020  Size: SH
  1. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the ignition coil bolts.
  2. Install the ignition coil(s) (722), as necessary.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the ignition coil bolts (723), as necessary.
  5. Tighten
    Tighten the bolts to 8 N·m (71 lb in).


    Object Number: 1411963  Size: SH
  6. Install the spark plug wire(s) (724) to the ignition coil(s), as necessary.

  7. Object Number: 1551870  Size: SH
  8. Connect the left ignition coil main electrical connector (4).
  9. Install the CPA retainer (3).
  10. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .