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

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. Remove the spark plug wire(s) (724) from the ignition coil(s), as necessary.



5. Remove the ignition coil bolts (723), as necessary.
6. Remove the ignition coil(s) (722), as necessary.

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.

Caution: Refer to Fastener Caution in the Preface section.

3. Install the ignition coil bolts (723), as necessary.

Tighten
Tighten the bolts to 8 N·m (71 lb in).




4. Install the spark plug wire(s) (724) to the ignition coil(s), as necessary.



5. Connect the left ignition coil main electrical connector (4).
6. Install the CPA retainer (3).
7. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement.