Valve Rocker Arm Cover Cleaning and Inspection

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Wear safety glasses in order to avoid eye damage.

Clean the valve rocker arm cover in cleaning solvent.
Dry the valve rocker arm cover with compressed air.
Inspect the valve rocker arm cover for the following:
- Damage to the PCV valve grommet (1)
- Damage to the bolt holes (2)
  A damaged valve rocker arm cover may interfere with the valve rocker arms.
- Damage to the exterior of the valve rocker arm cover (3)
- Gouges or damage to the sealing surface (4)
- Damage to the oil fill tube grommet (5)
- Restrictions to the ventilation system passages
  
  Fig 1: Cleaning & Inspecting Valve Rocker Arm Cover
  Courtesy of GENERAL MOTORS CORP.