Valve Rocker Arm Cover Replacement (Right)

Valve Rocker Arm Cover Replacement - Right
Removal Procedure
1. Remove the engine sight shield, if required.







2. Remove the Connector Position Assurance (CPA) lock.
3. Disconnect the main electrical connector (1) feeding the ignition coils.
4. Remove the harness clips (2).
5. Reposition the engine harness, if necessary.
6. Remove the spark plug wires from the ignition coils.
- Twist each plug wire 1/2 turn.
- Pull only on the boot in order to remove the wire from the ignition coil.







7. If equipped with the 4.8L, 5.3L, or 6.0L (LQ4) engine, perform the following:
7.1. Reposition the surge tank/heater hoses from the heater hose bracket.
7.2. Remove the heater hose bracket nut and bracket.







8. Remove the ignition coil bracket studs.
9. Remove the ignition coil bracket.







10. Remove the Positive Crankcase Ventilation (PCV) hose.







11. Loosen the valve rocker arm cover bolts.
12. Remove the valve rocker arm cover.







13. Remove and discard the old gasket (1).







14. Remove the oil fill tube from the rocker cover, if required.
15. If required, clean and inspect the rocker arm cover.



Installation Procedure

Important: All gasket surfaces should be free of oil or other foreign material during assembly.
DO NOT reuse the valve rocker arm cover gasket.







1. Lubricate the O-ring seal of the NEW oil fill tube with clean engine oil.
2. Insert the NEW oil fill tube into the rocker arm cover. Rotate the tube clockwise until locked in the proper position.
3. Install the oil fill cap into the tube. Rotate the cap clockwise until locked in the proper position.







4. Install a NEW rocker cover gasket (1) into the valve rocker cover lip.







5. Install the valve rocker arm cover.

Notice: Refer to Fastener Notice in Service Precautions.
Fastener Notice


6. Tighten the rocker arm cover bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).







7. Install the PCV hose.







8. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the coil bracket studs.
9. Install the ignition coil bracket.
10. Install the ignition coil bracket studs.
Tighten the studs to 12 Nm (106 inch lbs.).







11. If equipped with the 4.8L, 5.3L, or 6.0L (LQ4) engine, perform the following:
11.1. Install the heater hose bracket and nut.
Tighten the nut to 9 Nm (80 inch lbs.).

11.2. Position the surge tank/heater hoses to the heater hose bracket.







12. Install the spark plug wires to the ignition coils.
13. Position the engine harness, if necessary
14. Install the harness clips (2).
15. Connect the main electrical connector (1) feeding the ignition coils.
16. Install the CPA lock.
17. Install the engine sight shield, if required.