Inspection Procedure

• Leak engine oil
• Affect crankcase ventilation
• Interfere with the camshafts
• Interfere with the ignition coil sealing
• Allow water or condensation to enter the engine

Fig 1: Identifying Right Camshaft Cover Exterior Inspection Points

Courtesy of GENERAL MOTORS COMPANY

Inspect the exterior of the right camshaft cover for the following conditions:

• Damage to the camshaft position actuator solenoid valve bolt hole (1).
• Damage to the camshaft cover bolt holes (2)
• Damage to the mounting holes (3) for the ignition coil assembly and fuel injector sight shield ballstud.
• Damage to the camshaft position sensor bolt hole (4).
• Damage to the spark plug shield seal bore (5)
• Damage to the valve rocker arm oil control valve bolt hole (6).
• Damage to the oil fill hole (7)
NOTE:

Not serviceable - cam cover must be removed to replace PCV check valve. Can't service check valve alone (tangs will break on removal thus leaving foreign material in engine)

• Damage to the positive crankcase ventilation (PCV) hose connector (8) - A damaged PCV hose connector is not replaceable.

Fig 2: Identifying Right Camshaft Cover Interior Inspection Points

Courtesy of GENERAL MOTORS COMPANY

Inspect the interior of the right camshaft cover for the following conditions:

• Gouges or damage to the spark plug shield seal bore (1)
• Gouges or damage to the camshaft cover sealing groove (2)
• Damaged, loose or missing baffle (3)

Fig 3: Identifying Left Camshaft Cover Exterior Inspection Points

Courtesy of GENERAL MOTORS COMPANY

Inspect the exterior of the left camshaft cover for the following conditions:

• Damage to the mounting holes (1) for the ignition coil assembly
• Gouges or damage to the spark plug shield seal bore (2)
• Damage to the camshaft position actuator solenoid valve bolt hole (3).
• Damage to the valve rocker arm oil control valve bolt hole (4).
• Damage to the camshaft position sensor bolt hole (5).
• Damage to the camshaft cover bolt holes (6)

Fig 4: Identifying Left Camshaft Cover Interior Inspection Points

Courtesy of GENERAL MOTORS COMPANY

Inspect the interior of the left camshaft cover for the following conditions:

• Gouges or damage to the spark plug shield seal bore (1)
• Gouges or damage to the camshaft cover sealing groove (2)
• Damaged, loose or missing baffle (3)
NOTE:

Not serviceable - cam cover must be removed to replace PCV check valve. Can't service check valve alone (tangs will break on removal thus leaving foreign material in engine)

• Damage to the positive crankcase ventilation (PCV) hose connector (8) - A damaged PCV hose connector is not replaceable.