GM Service Manual Online
For 1990-2009 cars only

Cleaning Procedure

  1. Clean the camshaft cover in solvent.
  2. Caution: Refer to Safety Glasses Caution in the Preface section.

  3. Dry the camshaft cover with compressed air.

Inspection Procedure

  1. Inspect the camshaft cover for the following:
  2. • Dent or damage to the exterior of the camshaft cover
    • A dented or damaged cover may:
       - Leak oil
       - Effect crankcase ventilation
       - Interfere with the camshafts
       - Interfere with the ignition module sealing
       - Allow water or condensation to enter the engine
    • Damaged camshaft cover bolts
    • Damage or cracking to the camshaft cover bolt grommets
    • Restrictions to the ventilation system passages
    • Damaged, loose or missing baffle
    • Damaged, loose or missing baffle fasteners
    • Damage to the oil fill hole in the left camshaft cover
    • Damage or cracking to the PCV grommet in the left camshaft cover
    • Damage to the ventilation hose nipple in the right camshaft cover
    • Damaged threaded holes for the following:
       - Baffle
       - Ignition module
       - Wiring harness retainer
       - Fuel injector sight shield bracket in the right camshaft cover
    • Damage or warped seal groove for the following:
       - Camshaft cover seal
       - Spark plug port seals
  3. Repair or replace the camshaft cover as necessary.