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For 1990-2009 cars only
Makes 🢒 Buick 🢒 1996 🢒 Park Avenue 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Fuel Hose and Pipes

Fuel Hose and Pipes Fuel Sender To Fuel Filter

Removal Procedure

Chassis Fuel Pipes - Fuel Sender Assembly to In-Pipe Fuel Filter


    Object Number: 21196 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.)

    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.

  1. Relieve the fuel system fuel pressure. Refer to the Fuel Pressure Relief .
  2. Drain the fuel tank. Refer to Fuel Tank Draining .
  3. Remove the fuel tank. Refer to Fuel Tank Replacement .
  4. Remove the quick-connect fittings on the fuel sender assembly-side of the in-pipe fuel. 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. Check the position of the fuel and EVAP pipes and the fuel and EVAP pipe attaching hardware for installation.

Installation Procedure

    Object Number: 21196 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.)

    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.

  1. Install the new fuel feed, fuel return, and EVAP pipes and the fuel and EVAP pipe attaching hardware as noted during removal.
  2. Install the caps from the in-pipe fuel filter pipes and the fuel sender pipes.
  3. Install the new plastic retainers onto the in-pipe fuel filter pipes and on the fuel sender pipes
  4. Install the quick-connect fittings. Refer to Servicing Quick Connect Fittings .
  5. Install the fuel tank. Refer to Fuel Tank Replacement .
  6. Add fuel to the tank.
  7. Install the fuel tank filler cap.
  8. Connect the negative battery cable.
    9. 8.1. Turn the ignition switch ON for 2 seconds.
    8.2. Turn the ignition switch OFF for 10 seconds.
    8.3. Turn the ignition switch ON
    8.4. Check for fuel leaks.

Fuel Hose and Pipes Fuel Filter To Engine VIN 1

Chassis Fuel Pipes (VIN 1) - In-Pipe Fuel Filter to Engine Compartment

Removal Procedure

Tools Required

Refer to J 37088-A , Fuel Pipe Quick Connect Separator


Object Number: 21197 Size: SH
  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .
  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 fuel feed (2) and fuel return (1) quick-connect fittings in the engine compartment. Refer to Servicing Quick Connect Fittings .
  4. Raise the vehicle.
  5. Remove the quick-connect fittings on the engine-side of the in-pipe fuel filter. Refer to Servicing Quick Connect Fittings .
  6. Cap the in-pipe fuel filter pipe, the fuel feed pipe, and the fuel return pipe as needed to stop any fuel leakage.
  7. Remove the fuel feed, fuel return, and EVAP pipe attaching hardware and the fuel feed, fuel return, and EVAP pipes.
  8. Check the position of the fuel and EVAP pipes and the fuel and EVAP pipe attaching hardware for installation.
  9. Inspect the pipes for bends, kinks, and cracks.
  10. Repair or replace the pipe or pipes as required.

Chassis Fuel Pipes (VIN 1) - In-Pipe Fuel Filter to Engine Compartment

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, they must be replaced.


Object Number: 21197 Size: SH
  1. Install the new fuel feed, fuel return, and EVAP pipes and the fuel and EVAP pipe attaching hardware 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. Install new plastic connector retainers on the fuel pipes.
  4. Install the quick-connect fittings at the in-pipe fuel filter. Refer to Servicing Quick Connect Fittings .
  5. Lower the vehicle.
  6. Install the quick-connect fittings in the engine compartment. Refer to Servicing Quick Connect Fittings .
  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. 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.

Fuel Hose and Pipes Fuel Filter To Engine VIN K

Chassis Fuel Pipes (VIN K) - In-Pipe Fuel Filter to Engine Compartment

Removal Procedure

Tools Required

Refer to J 37088-A , Fuel Pipe Quick Connect Separator


Object Number: 21199 Size: SH
  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .
  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 fuel feed (2) and fuel return (1) quick-connect fittings in the engine compartment. Refer to Servicing Quick Connect Fittings .
  4. Raise the vehicle.
  5. Remove the quick-connect fittings on the engine-side of the in-pipe fuel filter. Refer to Servicing Quick Connect Fittings .
  6. Cap the in-pipe fuel filter pipe, the fuel feed pipe, and the fuel return pipe as needed to stop any fuel leakage.
  7. Remove the fuel feed, fuel return, and EVAP pipe attaching hardware and the fuel feed, fuel return, and EVAP pipes.
  8. Check the position of the fuel and EVAP pipes and the fuel and EVAP pipe attaching hardware for installation.
  9. Inspect the pipes for bends, kinks, and cracks.
  10. Repair or replace the pipe or pipes as required.

Chassis Fuel Pipe Replacement (VIN K) - In-Pipe Fuel Filter to Engine Compartment

Installation Procedure


Object Number: 21199 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, they must be replaced.

  1. Install the new fuel feed, fuel return, and EVAP pipes and the fuel and EVAP pipe attaching hardware 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. Install new plastic connector retainers on the fuel pipes.
  4. Install the quick-connect fittings at the in-pipe fuel filter. Refer to Servicing Quick Connect Fittings .
  5. Lower the vehicle.
  6. Install the quick-connect fittings in the engine compartment. Refer to Servicing Quick Connect Fittings .
  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. 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.

Fuel Hose and Pipes EVAP Pipes

Removal Procedure
Object Number: 21196 Size: SH
  1. Remove the hardware retaining the EVAP pipe.
  2. Inspect the location of the attaching hardware for installation.
  3. Remove the EVAP pipe.
  4. Inspect the pipe for bends, kinks, and cracks.
  5. Replace the pipes as required.

Installation Procedure

    Object Number: 44059 Size: SH

    Notice: Properly secure the EVAP pipe in order to prevent chafing of the pipe.

    Important: Route the replacement EVAP pipe in the same manner as the original EVAP pipe was routed.

  1. Install the EVAP pipe.
  2. Install the hardware retaining the EVAP pipe.