GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L (LMM) 🢒 Fuel Feed Pipe Replacement

Removal Procedure

    Object Number: 1866274 Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Remove the generator. Refer to Generator Replacement .
  3. Remove the air conditioning (A/C) compressor. Refer to Air Conditioning Compressor Replacement .
  4. Remove the charge air cooler inlet duct. Refer to Charge Air Cooler Inlet Pipe Replacement .
  5. Remove the water outlet tube. Refer to Water Outlet Tube Replacement .
  6. Remove the fuel feed line retainer bolt (1), and retainer.
  7. Reposition the fuel filter outlet hose clamp (2).
  8. Remove the fuel feed pipe from the fuel filter outlet hose.

    9. Object Number: 1865288 Size: SH
  9. Rotate the electrical connector level locks (1) rearward.
  10. Disconnect the vehicle's engine wiring harness main electrical connectors (2) from the engine wiring harness main electrical connectors.

    11. Object Number: 1865289 Size: SH
  11. Remove the engine wiring harness main electrical connector bracket bolts and reposition the bracket with the main connectors still attached.

    12. Object Number: 1866276 Size: SH
  12. Remove the fuel feed pipe clamp nuts (1 and 2).

    13. Object Number: 1866277 Size: SH
  13. Remove the fuel feed pipe clamp bolt (1).
  14. Reposition the fuel feed pipe clamp (2) at the fuel injection fuel feed manifold.
  15. Remove the hose from the fuel injection fuel feed manifold.

    16. Object Number: 1866278 Size: SH
  16. Reposition the engine wiring harness as required in order to remove the fuel feed pipe.

    17. Important: Note the routing of the fuel feed pipe prior to removal.

  17. Remove the fuel feed pipe.

Installation Procedure

    Object Number: 1866278 Size: SH

    Important: Route the fuel feed pipe under the positive crankcase ventilation (PCV) pipe and the intake manifold tube.

  1. Install the fuel feed pipe to the engine.
  2. Position the engine wiring harness if required.

    3. Object Number: 1866277 Size: SH
  3. Install the hose to the fuel injection fuel feed manifold.
  4. Position the fuel feed pipe clamp (2) at the fuel injection fuel feed manifold.

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

  5. Install the fuel feed pipe clamp bolt (1).

    6. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1866276 Size: SH
  6. Install the fuel feed pipe clamp nuts (1 and 2).

    7. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 1865289 Size: SH
  7. Position the bracket with the main connectors still attached and install the engine wiring harness main electrical connector bracket bolts.

    8. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 1865288 Size: SH
  8. Connect the vehicle's engine wiring harness main electrical connectors (2) to the engine wiring harness main electrical connectors.
  9. Rotate the electrical connector level locks (1) forward.

    10. Object Number: 1866274 Size: SH
  10. Install the fuel feed pipe to the fuel filter outlet hose.
  11. Position the fuel filter outlet hose clamp (2).
  12. Install the fuel feed line retainer, and bolt (1).

    13. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  13. Install the water outlet tube. Refer to Water Outlet Tube Replacement .
  14. Install the charge air cooler inlet duct. Refer to Charge Air Cooler Inlet Pipe Replacement .
  15. Install the A/C compressor. Refer to Air Conditioning Compressor Replacement .
  16. Install the generator. Refer to Generator Replacement .
  17. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  18. Prime the fuel system. Refer to Fuel System Priming .
  19. Start the engine. If the engine stalls, repeat the above step.
  20. Once the engine starts, inspect for fuel leaks.