GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 6.6L 🢒 Fuel Injection Fuel Feed Pipe Replacement - Left Side

Removal Procedure

    Object Number: 813243 Size: SH
  1. Loosen the outlet duct clamp at the upper intake manifold cover.
  2. Remove the upper intake manifold cover from the outlet duct.
  3. Remove the upper intake manifold cover.
  4. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  5. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

    6. Object Number: 664853 Size: SH
  6. Remove the charged air cooler inlet duct to turbocharger charge air cooler outlet.

    7. Object Number: 666693 Size: SH
  7. Remove the nut retaining the battery cable to the generator.
  8. If equipped, remove the battery cable to the auxiliary generator.
  9. Remove the battery cable harness clip from the bracket.
  10. Remove the bolt retaining the battery cable junction block from the power steering pump.
  11. Move and secure the battery cables out of the way.

    12. Object Number: 674616 Size: SH
  12. Disconnect the fuel hoses. Refer to Metal Collar Quick Connect Fitting Service .
  13. Remove the nut retaining the fuel hose bracket to the upper valve rocker arm cover.

    14. Object Number: 674653 Size: SH
  14. Disconnect the engine wiring harness connectors. Lift up on the latch in order to disconnect the connectors.

    15. Object Number: 674680 Size: SH
  15. Remove the bolts (1) retaining the engine wiring harness bulk connectors.
  16. Remove the bolts (2) retaining the engine wiring harness bracket.
  17. Remove the water outlet tube. Refer to Water Outlet Tube Replacement .
  18. Remove the glow plug relay bracket. Refer to Glow Plug Relay Replacement .
  19. Remove the auxiliary generator, if equipped. Refer to Auxiliary Generator Replacement .

    20. Object Number: 687021 Size: SH
  20. Disconnect the PCV hose from the upper valve rocker arm cover.

    21. Object Number: 1336209 Size: SH
  21. Before removing the fuel injector lines, use compressed air to blow any debris from between the injector line and fittings (1, 2). Wipe the fittings clean of debris.
  22. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings (1, 2) to assist in containing any debris during removal.

    23. Object Number: 660451 Size: SH
  23. Remove the fuel injector line retainers.

    24. 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.

  24. Remove fuel injector feed lines.

Installation Procedure

    Object Number: 660451 Size: SH
  1. Install fuel injector lines.

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


    Object Number: 1336209 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.

  2. Tighten the fuel injector line fittings.

    3. Tighten
    Tighten the fittings (1, 2) to 41 N·m (30 lb ft).

  3. Install the fuel injector line retainers.

    4. Tighten
    Tighten the screws to 4 N·m (35 lb in).


    Object Number: 687021 Size: SH
  4. Connect the PCV hose to the upper valve rocker arm cover.

    5. Object Number: 674680 Size: SH
  5. Install the bolts (2) retaining the engine wiring harness bracket.

    6. Tighten
    Tighten the wiring harness bracket bolts to 10 N·m (89 lb in).

  6. Install the bolts (1) retaining the engine wiring harness bulk connectors.

    7. Tighten
    Tighten the engine wiring harness bulk connector bolts to 21 N·m (15 lb ft).


    Object Number: 674653 Size: SH
  7. Connect the engine wiring harness bulk connectors.
  8. Install the water outlet tube. Refer to Water Outlet Tube Replacement .
  9. Install the glow plug relay bracket. Refer to Glow Plug Relay Replacement .
  10. Install the auxiliary generator, if equipped. Refer to Auxiliary Generator Replacement .

    11. Object Number: 674616 Size: SH
  11. Connect the fuel hoses. Push in until locked.
  12. Install the nut retaining the fuel hose bracket to the valve rocker arm cover.

    13. Tighten
    Tighten the fuel hose bracket nut to 21 N·m (15 lb ft).


    Object Number: 666693 Size: SH
  13. Position the generator positive cable.
  14. Install the generator positive cable in the clip on the engine front cover.
  15. Install the generator positive cable and the retaining nut to the generator.

    16. Tighten
    Tighten the generator positive cable nut to 9 N·m (80 lb in).

  16. Install the battery positive cable junction block bracket and bolt to the power steering pump.

    17. Tighten
    Tighten the junction block bracket bolt to 9 N·m (80 lb in).


    Object Number: 664853 Size: SH
  17. Install the charged air cooler inlet duct to turbocharger charge air cooler outlet.
  18. Align the marks on the hose and the intake manifold duct.

    19. Tighten
    Tighten the charge air cooler clamps to 6 N·m (53 lb in).


    Object Number: 813243 Size: SH
  19. Install the upper intake manifold cover.
  20. Install the upper intake manifold cover to the outlet duct.
  21. Tighten the outlet duct clamp at the upper intake manifold cover.

    22. Tighten
    Tighten the clamp to 6 N·m (53 lb ft).

  22. Fill the engine coolant. Refer to Cooling System Draining and Filling .
  23. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .