Valve Rocker Arm Cover Installation

1. Clean the sealing surfaces on the cylinder head and the valve rocker arm cover, so that the surfaces are free from oil and foreign material.
2. Apply a 5 mm (3/16 inch) bead of RTV sealant GM P/N 12346286 to the valve rocker arm covers, inboard of the bolt holes. The sealer must be wet to the touch, when the bolts are tightened.

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





3. Install the valve rocker arm cover.
4. Install the valve rocker arm cover bolts.
^ Tighten the valve rocker arm cover bolts to 27 Nm (20 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.