Valve Rocker Arm Cover Replacement (Left)
Valve Rocker Arm Cover Replacement- LeftRemoval Procedure
1. Partially drain the cooling system.
2. Remove the front ignition wire harness at the upper intake manifold and at the spark plugs.
3. Remove the thermostat bypass pipe.
4. Disconnect the Positive Crankcase Ventilation (PCV) vacuum hose.
5. Remove the valve rocker cover bolts.
6. Remove the valve rocker cover.
Bump the end of the valve rocker cover with the palm of your hand or a soft rubber mallet if the cover adheres to the cylinder head
7. Clean the sealing surface on the cylinder head and the valve rocker cover with degreaser.
Installation Procedure
1. Install a new gasket and new bolt grommets to the valve rocker cover. Ensure that the gasket is seated properly in the valve groove.
2. Apply sealant GM P/N United States 12345739, GM P/N Canada 10953541 or the equivalent at the cylinder head to the lower intake manifold joint.
3. Install the valve rocker cover.
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the valve rocker cover bolts.
^ Tighten the bolts to 10 Nm (89 inch lbs.).
5. Connect the PCV valve vacuum line.
6. Install the thermostat bypass pipe.
7. Install the front ignition wire harness.