Valve Cover: Service and Repair

REMOVAL
1. Negative (-) battery cable.
2. Air cleaner (ACL). See Powertrain Management.
3. Secondary (spark plug) wire retaining clamps from cylinder head cover.





4. Cylinder head cover nuts and seal washers (located under nuts).
5. Cylinder head cover and cylinder head cover gasket from cylinder head.

INSTALLATION
1. Apply a small amount of GM P/N 12346240 or equivalent, to the corners of the new cylinder head gasket.

CAUTION: Be sure not to block the oil drain hole-located at the front cylinder head opening-with the silicone sealant. This could cause excessive oil pressure within the cylinder head, resulting in a possible oil leak.

2. New cylinder head cover gasket to cylinder head cover.
3. Cylinder head cover to cylinder head; secure with four new seal washers and nuts. Tighten cylinder head cover nuts to 5 Nm (44 inch lbs.).
4. Secondary (spark plug) wire retaining clamps to cylinder head cover.
5. ACL.
6. Negative (-) battery cable.