GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Tahoe - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Valve Rocker Arm Cover Replacement - Right Side

Removal Procedure

    Object Number: 1696893 Size: SH
  1. Remove the intake manifold cover. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the connector position assurance (CPA) retainer (2).
  3. Disconnect the engine harness electrical connector (1) from the ignition coil wire harness.
  4. Remove the engine wiring harness (electronic throttle control branch) clip (6) from the ignition coil bracket stud.
  5. Reposition the engine wiring harness (electronic throttle control branch) as necessary.

    6. Object Number: 1699546 Size: SH
  6. Remove the generator battery cable clip (1) from the ignition coil bracket stud.
  7. Reposition the generator battery cable as necessary.

    8. Object Number: 1697282 Size: SH
  8. Remove the heater inlet hose (2) from the heater hose bracket (3).

    9. Object Number: 1697283 Size: SH
  9. Remove the surge tank outlet hose (2) from the heater hose bracket (3).

    10. Object Number: 1697280 Size: SH
  10. Remove the heater hose bracket nut and bracket

    11. Object Number: 1402028 Size: SH
  11. Remove the spark plug wires (724) from the ignition coils.
    12. • Twist each plug wire 1/2 turn.
    • Pull only on the boot in order to remove the wire from the ignition coil.
  12. Remove the ignition coil bracket studs (720).
  13. Remove the ignition coil bracket (719).

    14. Object Number: 1696757 Size: SH
  14. Remove the positive crankcase ventilation (PCV) tube (1) from the valve rocker cover (2).

    15. Object Number: 832211 Size: SH
  15. Loosen the valve rocker arm cover bolts.
  16. Remove the valve rocker arm cover.

    17. Object Number: 490696 Size: SH
  17. Remove and discard the old gasket (1).

    18. Object Number: 1559860 Size: SH
  18. Remove the oil fill cap (424) from the oil fill tube (423), if necessary.
  19. Remove and discard the oil fill tube, if necessary.

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.


    Object Number: 1559860 Size: SH
  1. Lubricate the O-ring seal (422) of the NEW oil fill tube with clean engine oil.
  2. Insert the NEW oil fill tube (423) into the rocker arm cover.

    3. Rotate the tube clockwise until locked in the proper position.

  3. Install the oil fill cap (424) into the tube.

    4. Rotate the cap clockwise until locked in the proper position.


    Object Number: 490696 Size: SH
  4. Install a NEW rocker cover gasket (1) into the valve rocker arm cover lip.

    5. Object Number: 832211 Size: SH
  5. Install the valve rocker arm cover.

    6. Notice: Refer to Fastener Notice in the Preface section.

  6. Tighten the rocker arm cover bolts.

    7. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 1696757 Size: SH
  7. Install the PCV tube (1) to the valve rocker cover (2).

    8. Object Number: 1402028 Size: SH
  8. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent to the threads of the ignition coil bracket studs.
  9. Position the ignition coil bracket (719) onto the rocker cover.
  10. Install the ignition coil bracket studs (720).

    11. Tighten
    Tighten the studs to 12 N·m (106 lb in).

  11. Install the spark plug wires (724) to the ignition coils.

    12. Object Number: 1697280 Size: SH
  12. Install the heater hose bracket and nut.

    13. Tighten
    Tighten the nut to 9 N·m (80 lb in).


    Object Number: 1697283 Size: SH
  13. Install the surge tank outlet hose (2) to the heater hose bracket (3).

    14. Object Number: 1697282 Size: SH
  14. Install the heater inlet hose (2) to the heater hose bracket (3).

    15. Object Number: 1699546 Size: SH
  15. Position the generator battery cable as necessary.
  16. Install the generator battery cable clip (1) to the ignition coil bracket stud.

    17. Object Number: 1235686 Size: SH
  17. Position the engine wiring harness (electronic throttle control branch) as necessary.
  18. Install the engine wiring harness (electronic throttle control branch) clip (6) to the ignition coil bracket stud.
  19. Connect the engine harness electrical connector (1) to the ignition coil wire harness.
  20. Install the CPA retainer (2).
  21. Install the intake manifold cover. Refer to Upper Intake Manifold Sight Shield Replacement .