Inspection Procedure
- Inspect each camshaft cover for the dents or damage to the exterior. A dented or damaged camshaft cover may:
- Leak engine oil
- Effect crankcase ventilation
- Interfere with the camshafts
- Interfere with the ignition coil sealing
- Allow water or condensation to enter the engine
Courtesy of GENERAL MOTORS CORP.
- Inspect the exterior of the left camshaft cover for the following conditions:
- Damage to the camshaft cover bolt holes (1)
- Damage to the oil fill hole (2)
- Damage to the mounting holes (3) for the ignition coil assembly
- Damage to the positive crankcase ventilation (PCV) hose connector (4) - A damaged PCV hose connector is replaceable.
Courtesy of GENERAL MOTORS CORP.
- Inspect the interior of the left camshaft cover for the following conditions:
- Gouges or damage to the camshaft cover sealing groove (1)
- Damaged, loose or missing baffle fasteners (2)
- Damaged, loose or missing baffle (3)
- Gouges or damage to the ignition coil seal bore (4)
- Restrictions to the ventilation system (5)
Courtesy of GENERAL MOTORS CORP.
- Inspect the exterior of the right camshaft cover for the following conditions:
- Damage to the camshaft cover bolt holes (1)
- Damage to the mounting holes (2) for the ignition coil assembly
- Damage to the PCV orifice (3) - A damaged PCV orifice can be replaced. Refer to PCV Orifice Replacement.
Courtesy of GENERAL MOTORS CORP.
- Inspect the interior of the right camshaft cover for the following conditions:
- Gouges or damage to the camshaft cover sealing groove (1)
- Gouges or damage to the ignition coil seal bore (2)
- Restrictions to the ventilation system (3)
- Repair or replace the camshaft cover or covers as necessary.