GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: In order to reduce the risk of fire and personal injury observe the following items:

       • Replace all nylon fuel pipes that are nicked, scratched or damaged during installation, do not attempt to repair the sections of the nylon fuel pipes
       • Do not hammer directly on the fuel harness body clips when installing new fuel pipes. Damage to the nylon pipes may result in a fuel leak.
       • Always cover nylon vapor pipes with a wet towel before using a torch near them. Also, never expose the vehicle to temperatures higher than 115°C (239°F) for more than one hour, or more than 90°C (194°F) for any extended period.
       • Apply a few drops of clean engine oil to the male pipe ends before connecting fuel pipe fittings. This will ensure proper reconnection and prevent a possible fuel leak. (During normal operation, the O-rings located in the female connector will swell and may prevent proper reconnection if not lubricated.)

  1. Relieve the fuel system pressure.
  2. Tilt the cab. Refer to Cab Tilting .

  3. Object Number: 1253411  Size: SH

    Important: 

       • Clean all the fuel pipe connections and the surrounding areas before disconnecting the pipes in order to avoid possible contamination of the fuel system.
       • Cap all fuel pipes to avoid possible contamination of the fuel system.

  4. Disconnect the fuel feed line from the fuel pipe.
  5. Unclip the fuel filter hose retaining clip.

  6. Object Number: 1253413  Size: SH
  7. Remove the fuel filter hose from the fuel filter head pipes.

Installation Procedure


    Object Number: 1253413  Size: SH
  1. Install the fuel feed pipe to the fuel filter head pipes.
  2. Connect the fuel feed pipe the retainer .

  3. Object Number: 1253411  Size: SH
  4. Connect the fuel feed hose to the fuel feed pipe .
  5. Inspect for fuel leaks .