Valve Rocker Arm Cover Replacement (Left)
Removal Procedure
1. Raise and suitably support the vehicle.
2. Drain the coolant. Refer to Draining and Filling Cooling System in Cooling System.
3. Lower the vehicle.
4. Remove the left (front) spark plug wires. Refer to Spark Plug Wire Harness Replacement in Powertrain Management.
5. Remove the engine mount strut. Refer to Engine Mount Strut Replacement (Left) or Engine Mount Strut Replacement (Right).
6. Remove the thermostat bypass hose and pipe. Refer to Thermostat Bypass Pipes Replacement in Cooling System.
7. Remove the Positive Crankcase Ventilation (PCV) valve from the left (front) valve rocker arm cover.
8. Remove the left (front) valve rocker arm cover bolts.
9. Remove the left (front) valve rocker arm cover.
10. Remove the left (front) valve rocker arm cover gasket.
11. Clean the valve rocker arm cover,
12. Clean the valve rocker arm cover gasket sealing surfaces on the cylinder head and the lower intake manifold.
Installation Procedure
1. Install a new left (front) valve rocker arm cover gasket.
Important: Apply sealant GM P/N 12345739 or equivalent at the cylinder head to lower intake manifold joint.
2. Apply sealant at the cylinder head to lower intake manifold joint at the rear of the lower intake manifold (1).
Important: Apply sealant GM P/N 12345739 or equivalent at the cylinder head to lower intake manifold joint.
3. Apply sealant at the cylinder head to lower intake manifold joint at the front of the lower intake manifold (1).
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the left (front) valve rocker arm cover.
Hand tighten the left (front) valve rocker arm cover bolts.
Tighten the valve rocker arm cover bolts to 10 Nm (89 inch lbs.).
5. Install the positive crankcase ventilation (PCV) valve to the left (front) valve rocker arm cover.
6. Install the thermostat bypass hose and pipe. Refer to Thermostat Bypass Pipes Replacement in Cooling System.
7. Install the engine mount strut. Refer to Engine Mount Strut Replacement (Left) or Engine Mount Strut Replacement (Right).
8. Install the left (front) spark plug wires. Refer to Spark Plug Wire Harness Replacement in Powertrain Management.
9. Fill the engine with coolant. Refer to Draining and Filling Cooling System in Cooling System.