Valve Rocker Arm Cover Replacement (Left)

Valve Rocker Arm Cover Replacement - Left
Removal Procedure
1. Remove the right engine strut mount.
2. Remove the thermostat bypass pipe.
3. Remove the PCV valve from valve rocker arm cover.

Notice: Valve rocker arm cover gasket and sealant must be carefully trimmed away from lower intake manifold gasket. Failure to do so will damage the lower intake manifold gasket, causing a severe oil leak.

4. Remove the valve rocker arm cover bolts.





Important: When removing the valve rocker arm cover, make sure the gasket stays in place attached to the cylinder head.

5. Remove the valve rocker arm cover. Bump the end of the valve rocker arm cover with the palm of your hand or a soft rubber mallet if the cover adheres to the cylinder head.





6. Trim valve cover gasket and sealant away from lower intake manifold gasket at the cylinder head to lower intake manifold joints (1).
7. Remove the valve cover gasket.
8. Clean the sealing surface on the cylinder head with degreaser.
9. Clean the valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection.

Installation Procedure





Important: All gasket mating surfaces need to be free of oil and foreign material. Use GM P/N 12346139 (Canadian P/N 88901148), or equivalent, at the cylinder head to lower intake manifold joint.

Important: Apply sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, at the cylinder head lower intake joint.

1. Apply sealant at the cylinder head to lower intake manifold joints (1).
2. Install the valve rocker arm cover gasket into valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.





Notice: Refer to Fastener Notice in Service Precautions.

3. Install the valve rocker arm cover.
^ Tighten bolts to 10 Nm (89 inch lbs.).
4. Install the PCV valve to valve rocker arm cover.
5. Install the thermostat bypass pipe.
6. Install the right engine mount strut.