Valve Rocker Arm Cover Replacement (Right)
Valve Rocker Arm Cover Replacement - RightRemoval Procedure
1. If equipped with regular production option (RPO) HP2, disconnect the energy storage box (ESB).
2. Remove the engine sight shield, if required.
3. Remove the connector position assurance (CPA) lock (5).
4. Disconnect the main electrical connector (4) to the ignition coil wire harness.
5. Remove the harness clips (1).
6. Reposition the engine harness, if necessary.
7. 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.
8. Reposition the surge tank/heater hoses from the heater hose bracket.
9. Remove the heater hose bracket nut and bracket.
10. If equipped with RPO HP2, remove the auxiliary heater water pump bracket nuts (4).
11. Remove the auxiliary heater water pump from the studs, and reposition out of the way.
12. If equipped with RPO HP2, remove the starter/generator control module (SGCM) cover bolts, and cover.
13. Remove the 3-phase cable nuts to the SGCM.
14. Remove the 3-phase cable from the SGCM.
15. If equipped with RPO HP2, remove the 3-phase cable bracket nuts (2).
16. Remove the 3-phase cable bracket (1) from the studs, and reposition the cable and bracket out of the way.
17. Remove the ignition coil bracket studs.
18. Remove the ignition coil bracket.
19. Remove the positive crankcase ventilation (PCV) hose.
20. Loosen the valve rocker arm cover bolts.
21. Remove the valve rocker arm cover.
22. Remove and discard the old gasket (1).
23. Remove the oil fill tube from the rocker cover, if required.
24. 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.
^ If the oil fill tube has been removed from the rocker arm cover, install a NEW fill tube during assembly.
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 arm cover lip.
5. Install the valve rocker arm cover.
Notice: Refer to Fastener Notice in Service Precautions.
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 bracket bolts.
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 RPO HP2, position the cable (w/bracket) and install the 3-phase cable bracket to the studs.
12. Install the 3-phase cable bracket nuts (2).
^ Tighten the nuts to 15 Nm (11 ft. lbs.).
13. If equipped with RPO HP2, install the 3-phase cable to the SGCM.
14. Install the 3-phase cable nuts to the SGCM.
^ Tighten the nuts to 9 Nm (80 inch lbs.).
15. Install the SGCM cover and bolts.
^ Tighten the bolts to 9 Nm (80 inch lbs.).
16. If equipped with RPO HP2, position the auxiliary heater water pump and install it onto the studs.
17. Install the auxiliary heater water pump bracket nuts (4).
^ Tighten the bolts to 15 Nm (11 ft. lbs.).
18. Install the heater hose bracket and nut.
^ Tighten the nut to 9 Nm (80 inch lbs.).
19. Position the surge tank/heater hoses to the heater hose bracket.
20. Install the spark plug wires to the ignition coils.
21. Position the engine harness, if necessary.
22. Install the harness clips (1).
23. Connect the main electrical connector (4) feeding the ignition coils.
24. Install the CPA lock (5).
25. Install the engine sight shield, if required.
26. If equipped with RPO HP2, connect the ESB.