Valve Rocker Arm Cover Cleaning and Inspection
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS CORP.
Inspect the valve rocker arm covers (542) for the following conditions:
- Damaged sealing surfaces
- Damaged bolt hole threads
- Restrictions within the positive crankcase ventilation (PCV) system passages