GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Express 🢒 Engine 🢒 Engine Controls - 7.4L 🢒 Fuel Hose/Pipes Replacement - Filter to Engine

Removal Procedure

    Object Number: 34089 Size: SH

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  3. Disconnect the fuel feed and return pipes from the fuel rail pipes.
  4. Remove the fuel pipes from the bellhousing stud retainer clip.

    5. Caution: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  5. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Disconnect the fuel feed pipe (5) at the fuel filter.

    7. Object Number: 588983 Size: SH
  7. Disconnect the chassis fuel return pipe (4) at the rear fuel return pipe (3).

    8. Object Number: 420628 Size: SH
  8. Remove the fuel pipe retaining clips (1). Note the location of the retaining clips for installation.
  9. Remove the fuel feed and return pipes (2).

Installation Procedure

    Object Number: 420628 Size: SH
  1. Position the fuel feed and return pipes (2) in the vehicle.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the fuel pipe retaining clips (1).

    3. Tighten
    Tighten the fuel pipe retaining clip bolts to 12 N·m (106 lb in).


    Object Number: 588983 Size: SH
  3. Connect the chassis fuel return pipe (4) to the rear fuel return pipe (3).

    4. Object Number: 34089 Size: SH
  4. Connect the fuel feed pipe (5) to the fuel filter.
  5. Lower the vehicle.
  6. Connect the fuel feed and return pipes to the fuel rail pipes.

    7. Tighten
    Tighten the fuel pipe fittings to 27 N·m (20 lb ft) using a backup wrench.

  7. Install the fuel pipes to the bellhousing stud retainer clip.

    8. Tighten
    Tighten the fuel pipe retainer clip nut to 28 N·m (21 lb ft).

  8. Tighten the fuel filler cap.
  9. Connect the negative battery cable.
  10. Inspect for leaks.
    11. 10.1. Turn the ignition ON for 2 seconds.
    10.2. Turn the ignition OFF for 10 seconds.
    10.3. Turn the ignition ON.
    10.4. Inspect for fuel leaks.
  11. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.