GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Express - AWD 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L (LMM) 🢒 Fuel Hose/Pipes Replacement - Chassis

Removal Procedure

    Object Number: 1378748 Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Disconnect the fuel feed and return lines. Refer to Metal Collar Quick Connect Fitting Service .
  3. Remove the fuel line bracket nut.
  4. Remove the fuel line bracket from the stud.
  5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

    6. Object Number: 737687 Size: SH
  6. Remove the fuel bundle clips (2) from the transmission brackets (1).
  7. Disconnect the chassis harness from the retaining clips.
  8. Remove the fuel system cooler, if necessary. Refer to Fuel Cooler Replacement .

    9. Object Number: 1228124 Size: SH
  9. Disconnect the fuel feed and return lines from the fuel tank lines. Refer to Plastic Collar Quick Connect Fitting Service .

    10. Object Number: 1228212 Size: SH
  10. Remove the fuel bundle nuts from the chassis.

    11. Object Number: 379478 Size: SH
  11. Loosen the electronic brake control module (EBCM) bracket bolts (4).
  12. Allow the EBCM to remain loose in order to allow fuel pipe clearance.
  13. Remove the fuel bundle using the following procedure:
    14. 13.1. Guide the fuel bundle pipes towards the rear of vehicle to clear the engine.
    13.2. Lower the fuel bundle while moving it foreword and out.

Installation Procedure

    Object Number: 1228212 Size: SH
  1. Install the fuel pipe bundle using the following procedure:
    2. 1.1. Install the fuel bundle to the chassis by guiding the pipes towards the rear of vehicle.
    1.2. Lift the fuel pipes, while guiding the forward portion of the pipes up towards the engine connections.

    Notice: Refer to Fastener Notice in the Preface section.

  2. Install the fuel bundle nuts to the chassis.

    3. Tighten
    Tighten the nuts to 16 N·m (12 lb ft).


    Object Number: 1228124 Size: SH
  3. Connect the fuel feed and return lines to the fuel tank lines. Refer to Plastic Collar Quick Connect Fitting Service .
  4. Install the fuel system cooler, if necessary. Refer to Fuel Cooler Replacement .

    5. Object Number: 737687 Size: SH
  5. Connect the fuel bundle clips (2) to the transmission brackets (1).

    6. Object Number: 379478 Size: SH
  6. Tighten the EBCM bracket bolts (4).

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

  7. Lower the vehicle.

    8. Object Number: 1378748 Size: SH
  8. Install the fuel line bracket to the stud.
  9. Install the fuel line bracket nut.

    10. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  10. Connect the fuel feed and return lines. Refer to Metal Collar Quick Connect Fitting Service .
  11. Prime the fuel system. Refer to Fuel System Priming .
  12. Start the engine. If the engine stalls, repeat the above step.
  13. Once the engine starts, inspect for fuel leaks.
  14. Install the engine cover. Refer to Engine Cover Replacement .