GM Service Manual Online
For 1990-2009 cars only

Fuel Hose and Pipes Sender to In-Line Filter

Removal Procedure

Caution: In order to Reduce the Risk of Fire and Personal Injury:

   • If nylon fuel pipes are nicked, scratched or damaged during installation, Do Not attempt to repair the sections of the nylon fuel pipes. Replace them.
   • When installing new fuel pipes, Do Not hammer directly on the fuel harness body clips as it may damage the nylon pipes resulting in a possible 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.
   • Before connecting fuel pipe fittings, always apply a few drops of clean engine oil to the male pipe ends. 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.)

Notice: Do not attempt to straighten any kinked nylon fuel lines. Replace any kinked nylon fuel feed or return pipes in order to prevent damage to the vehicle.


    Object Number: 13589  Size: SH
  1. Relieve the fuel system fuel pressure. Refer to the Fuel Pressure Relief Procedure .
  2. Drain the fuel tank. Refer to Fuel Tank Replacement (Draining Fuel Tank) .
  3. Remove the fuel tank. Refer to Fuel Tank Replacement (Replacement) .
  4. Remove the quick-connect fittings (1), (4), on the fuel sender assembly-side of the in-pipe fuel filter (3). Refer to Servicing Quick Connect Fittings .
  5. Cap the fuel sender fuel pipes and the in-pipe fuel filter pipes as needed to stop any fuel leakage.
  6. Remove the fuel feed, fuel return, and EVAP pipe attaching hardware and the fuel feed, fuel return, and EVAP pipes.
  7. Note the position of the fuel and EVAP pipes (2) and the fuel and EVAP pipe attaching hardware for installation.

Installation Procedure

Caution: In order to Reduce the Risk of Fire and Personal Injury:

   • If nylon fuel pipes are nicked, scratched or damaged during installation, Do Not attempt to repair the sections of the nylon fuel pipes. Replace them.
   • When installing new fuel pipes, Do Not hammer directly on the fuel harness body clips as it may damage the nylon pipes resulting in a possible 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.
   • Before connecting fuel pipe fittings, always apply a few drops of clean engine oil to the male pipe ends. 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.)

Notice: Do not attempt to straighten any kinked nylon fuel lines. Replace any kinked nylon fuel feed or return pipes in order to prevent damage to the vehicle.


    Object Number: 13589  Size: SH
  1. Install the new fuel feed, fuel return, EVAP pipes, and the fuel and EVAP pipe attaching hardware as noted during removal.
  2. Remove the caps from the in-pipe fuel filter pipes and the fuel sender fuel pipes.
  3. Install new plastic connector retainers on the in-pipe fuel filter pipes and on the fuel sender fuel pipes.
  4. Install the quick-connect fittings (1), (4). Refer to Servicing Quick Connect Fittings .
  5. Install the fuel tank. Refer to Fuel Tank Replacement (Replacement) .

  6. Object Number: 13586  Size: SH
  7. Add fuel and install the fuel tank filler pipe cap.
  8. Tighten the fuel tank filler pipe cap.
  9. Install the negative battery cable.
  10. Inspect for leaks.
  11. 9.1. Turn the ignition switch to the On position for 2 seconds.
    9.2. Turn the ignition switch to the Off for 10 seconds.
    9.3. Turn the ignition switch to the On position.
    9.4. Check for fuel leaks.
  12. Install the intake manifold sight shield . Refer to Intake Manifold Sight Shield Replacement.

Fuel Hose and Pipes Filter to Engine Compartment

Removal Procedure

Tools Required

J 37088-A Fuel Pipe Quick-Connect Separator


    Object Number: 13861  Size: SH

    Caution: In order to Reduce the Risk of Fire and Personal Injury:

       • If nylon fuel pipes are nicked, scratched or damaged during installation, Do Not attempt to repair the sections of the nylon fuel pipes. Replace them.
       • When installing new fuel pipes, Do Not hammer directly on the fuel harness body clips as it may damage the nylon pipes resulting in a possible 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.
       • Before connecting fuel pipe fittings, always apply a few drops of clean engine oil to the male pipe ends. 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 fuel pressure. Refer to the Fuel Pressure Relief Procedure .
  2. Clean all engine fuel pipe connections and areas surrounding the engine fuel pipe connections before disconnecting the engine fuel pipe connections to avoid possible contamination of the fuel system.
  3. Remove the quick-connect fittings in the engine compartment (1) (2). Refer to Servicing Quick Connect Fittings .
  4. Raise the vehicle.
  5. Remove the quick-connect fitting on the engine-side of the in-pipe fuel filter fuel return pipe. Refer to Servicing Quick Connect Fittings .

  6. Object Number: 13606  Size: SH
  7. Remove the threaded fitting (4) on the engine-side of the in-pipe fuel filter fuel feed pipe.
  8. Cap the in-pipe fuel filter pipe, the fuel feed pipe, and the fuel return pipe as needed to stop any fuel leakage.
  9. Remove the fuel feed, fuel return, EVAP pipe (1), retainer (3), attaching hardware and the fuel feed, fuel return, and EVAP pipes.
  10. Note the position of the fuel and EVAP pipes, and the fuel and EVAP pipe attaching hardware for installation.
  11. Inspect the pipes (2) for bends, kinks and cracks. Repair or replace the pipe or pipes as required.

Installation Procedure

Caution: In order to Reduce the Risk of Fire and Personal Injury:

   • If nylon fuel pipes are nicked, scratched or damaged during installation, Do Not attempt to repair the sections of the nylon fuel pipes. Replace them.
   • When installing new fuel pipes, Do Not hammer directly on the fuel harness body clips as it may damage the nylon pipes resulting in a possible 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.
   • Before connecting fuel pipe fittings, always apply a few drops of clean engine oil to the male pipe ends. 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.)


    Object Number: 13861  Size: SH
  1. Install the new fuel feed, fuel return, and EVAP pipes and the fuel and EVAP pipe attaching hardware (4) as noted during removal.
  2. Remove the caps from the in-pipe fuel filter pipe, the fuel feed pipe, and the fuel return pipe.

  3. Object Number: 13606  Size: SH
  4. Install the new plastic connector retainers on the fuel return pipes.
  5. Install the quick-connect fitting at the in-pipe fuel filter in the fuel return pipe. Refer to Servicing Quick Connect Fittings .
  6. Install the threaded fitting (4) at the outlet of the in-pipe fuel filter (5) in the fuel feed pipe.
  7. Tighten
    Tighten the in-pipe fuel filter fitting to 30 N·m (22  lb. ft.).

  8. Lower the vehicle.

  9. Object Number: 13861  Size: SH
  10. Install the quick-connect fittings in the engine compartment (1), (2). Refer to Servicing Quick Connect Fittings .
  11. Add fuel and install the fuel tank filler pipe cap.
  12. Tighten the fuel tank filler pipe cap.
  13. Install the negative battery cable. Refer to Seats and Carpet.
  14. Inspect for leaks.
  15. 11.1. Turn the ignition switch to the On position for 2 seconds.
    11.2. Turn the ignition switch to the Off for 10 seconds.
    11.3. Turn the ignition switch to the On position.
    11.4. Check for fuel leaks.
  16. Install intake manifold top cover.
  17. Tighten
    Tighten the nuts to 2 N·m (18 lb in).

    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.