For 1990-2009 cars

### Removal Procedure

1. Remove the engine flywheel. Refer to Engine Flywheel Replacement .
2. Remove the camshaft rear bearing hole plug.

### Installation Procedure

1. Coat the camshaft rear bearing hole plug with sealer. Use sealer GM P/N 12345493 or the equivalent.
2. Install the camshaft rear bearing hole plug.
3. Install the engine flywheel. Refer to Engine Flywheel Replacement .