Valve Rocker Arm Cover Replacement (Left)

Valve Rocker Arm Cover Replacement - Left
Removal Procedures





1. Disconnect the battery negative cables from the batteries.
2. Remove the left side lower intake manifold in order to access the fuel injection pipes.
3. Remove the shift cable bracket and shield.

Important: Do not bend the fuel injector lines in order to ease in the removal of the valve rocker arm cover.

4. Remove the fuel injection lines and clips for the fuel injection nozzles.





5. Remove the valve rocker arm cover bolts.





Notice: Prying on the valve rocker arm cover may cause damage to the sealing surfaces. Use a block of wood against the side of the valve rocker arm cover and strike with a hammer in a sideways direction to shear the RTV sealant.

6. Remove the valve rocker arm cover from the cylinder head.
7. Clean the sealing surfaces on the valve rocker arm cover and the cylinder head.

Installation Procedure





Notice: Do not allow the RTV sealant into the valve rocker arm cover bolt holes. This may cause a "valve lock" condition, when the bolts are tightened, damaging the cylinder head casting.

Important: Apply a 5 - 8 mm (3/16 - 5/16 inch) bead of RTV sealant to the valve rocker arm cover. The sealant should be applied such as that it follows and overlaps the stepped ridge. This will distribute the RTV on both the upper and lower levels of the step. When the valve rocker arm cover is fastened to the cylinder head, the RTV should flow on both the valve rocker arm cover and the cylinder head sealing surfaces. The sealer must be wet to the touch when the bolts are tightened to specifications.

1. Apply the RTV sealant GM P/N 12346286 to the valve rocker arm covers.





2. Install the valve rocker arm cover to the cylinder head.





Notice: Refer to Fastener Notice in Service Precautions.

3. Install the valve rocker arm cover bolts.
^ Tighten the cover bolts to 27 Nm (20 ft. lbs.).
4. Install the fuel injection lines and clips.
5. Install the shift cable bracket and shield.
^ Tighten the bracket bolts to 25 Nm (18 ft. lbs.).
6. Install the lower intake manifold.
7. Connect the battery negative cables from the batteries.