For 1990-2009 cars

1. Apply clean engine oil to the camshaft position actuator valve hole.
2. Install the camshaft position actuator valve.
3. Add threadlock GM P/N 12346004 (Canadian P/N 10953480) to the camshaft position actuator valve bolt threads.

Caution: Refer to Fastener Caution in the Preface section.

4. Install the camshaft position actuator valve bolt and tighten to 10 N·m (89 lb in).