Valve Rocker Arm Cover Replacement - Left Side Front

1. Partially drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
2. Remove the front ignition wire harness at the upper intake manifold and at the spark plugs.
3. Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement in Engine Cooling.
4. Disconnect the 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.

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 sealer in the notch on the cover. Use GM P/N 1052917 or the equivalent.
3. Install the valve rocker cover.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the valve rocker cover bolts.

Tighten
Tighten the valve rocker arm cover bolts to 10 N·m (89 lb in).

5. Connect the PCV valve vacuum line.
6. Install the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement in Engine Cooling.



7. Install the front ignition wire harness.
8. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.