GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Valve Rocker Arm Cover Replacement - Upper Right Side

Removal Procedure
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  3. Remove the charged air cooler outlet duct. Refer to Charge Air Cooler Outlet Pipe Replacement .
  4. Remove the exhaust gas recirculation (EGR) cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  5. Remove the heater outlet hose bolt from the bracket.
  6. Position the heater outlet hose out of the way.

    7. Object Number: 1872803 Size: SH
  7. Remove the wiring harness retainer from the bracket.
  8. Remove the oil level indicator tube bolt (1).
  9. Remove the oil level indicator tube bracket bolts (2).
  10. Remove the bracket.

    11. Object Number: 1602054 Size: SH
  11. Remove the fuel filter bracket bolts.
  12. Reposition the fuel filter with bracket.
  13. Remove the positive crankcase ventilation (PCV) hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .

    14. Object Number: 1872907 Size: SH
  14. Remove the engine harness bracket bolt.
  15. Position engine harness brackets aside.

    16. Object Number: 1335614 Size: SH
  16. Prior to removing the fuel injector pipes, use compressed air to blow any debris from between the injector line and fittings. Wipe the fittings clean of debris.
  17. Spray lithium grease between the fuel injector line and fittings to assist in containing any debris during removal. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.

    18. Notice: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow debris to enter the fuel injector inlet and damage the fuel injector.

  18. Remove the right fuel injector pipes.

    19. Object Number: 1335653 Size: SH
  19. Remove the upper valve rocker arm cover bolts.
  20. Remove the upper valve rocker arm cover.
  21. Remove the upper valve rocker arm cover gasket.
  22. Inspect the upper valve rocker arm cover gasket for damage, replace if necessary. Otherwise reuse the old gasket.
  23. If required, clean and inspect the upper valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection - Upper .

Installation Procedure

    Object Number: 1335653 Size: SH
  1. Install the upper valve rocker arm cover gasket.
  2. Install the upper valve rocker arm cover.
  3. Install the upper valve rocker arm cover bolts.

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


    Object Number: 1411030 Size: SH
  4. Tighten the upper valve rocker arm cover bolts in the sequence shown.

    5. Tighten
    Tighten the bolts to 8 N·m (71 lb in).


    Object Number: 1335614 Size: SH

    Notice: Ensure proper torquing of the fuel injector line. An under-torqued fuel injector line will not seal properly and an over-torqued fuel injector line may damage the fuel injector fitting. An improperly sealed or damaged fuel injector line or fuel injector fitting will cause a fuel leak.

  5. Install the fuel injector pipes.

    6. Tighten
    Tighten the pipes to 41 N·m (30 lb ft).


    Object Number: 1872907 Size: SH
  6. Position engine harness brackets.
  7. Install the engine harness bracket bolt.

    8. Tighten
    Tighten the bolt to 21 N·m (15 lb ft).

  8. Install the PCV hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .

    9. Object Number: 1602054 Size: SH
  9. Position the fuel filter with bracket to the rocker cover.
  10. Install the fuel filter bracket bolts.

    11. Tighten
    Tighten the bolts to 21 N·m (15 lb ft).

  11. Position the heater outlet hose.
  12. Install the heater hose bracket bolt to the bracket.

    13. Tighten
    Tighten the bolt to 21 N·m (15 lb ft).

  13. Install the EGR cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .

    14. Object Number: 1872803 Size: SH
  14. Install the bracket.
  15. Install the oil level indicator tube bracket bolts (2).

    16. Tighten
    Tighten the bolts to 21 N·m (15 lb ft).

  16. Install the oil level indicator tube bolt (1).

    17. Tighten
    Tighten the bolt to 21 N·m (15 lb ft).

  17. Install the wiring harness retainer to the bracket.
  18. Install the charged air cooler outlet duct. Refer to Charge Air Cooler Outlet Pipe Replacement .
  19. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  20. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .