GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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.

Notice: Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.

Important: Important do not attempt to repair sections of nylon fuel pipes. If the nylon fuel pipes are damaged, replace them.

Important: Always maintain cleanliness when servicing fuel system components.


    Object Number: 12742  Size: SH
  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief
  2. Drain the fuel tank. Refer to Fuel Tank Draining
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in general information.
  4. Remove the fuel tank filler EVAP hose from the fuel tank.
  5. Remove the fuel tank filler hose from the fuel tank.
  6. Disconnect the quick-connect fittings at the fuel tank. Refer to Plastic Collar Quick Connect Fitting Service
  7. Remove the modular fuel sender, and the fuel tank pressure sensor electrical connectors.
  8. Remove the EVAP pipe from the connection at the front of the fuel tank.
  9. Remove the rubber exhaust pipe hangers in order to allow the exhaust system to drop slightly.
  10. Remove the exhaust pipe heat shield bolts and the exhaust pipe heat shield.

  11. Object Number: 12739  Size: SH
  12. With the aid of an assistant, support the fuel tank, and remove the fuel tank strap attaching bolts which retain the fuel tank straps.
  13. Lower the fuel tank enough in order to disconnect the fuel sender electrical connector and remove the fuel sender retaining clips.
  14. Disconnect the EVAP pipe to the rear of the fuel tank.
  15. Disconnect the EVAP pipe to the fuel sender assembly.
  16. Remove the fuel tank from the vehicle and place the fuel tank in a suitable work area.
  17. If the fuel tank is not being replaced, go to Install or Connect.
  18. Remove the modular fuel sender assembly. Refer to Fuel Sender Assembly Replacement
  19. Remove the retaining clip from the EVAP pipe. Note the position of the retaining clip for installation.
  20. Remove the EVAP pipe from the insulator clips. Note the position of the EVAP pipe for installation.
  21. Disconnect the quick-connect fittings at the fuel sender. Refer to Plastic Collar Quick Connect Fitting Service
  22. Remove the fuel feed and fuel return pipe assemblies and the insulator clips from the fuel tank.

  23. Object Number: 12743  Size: SH
  24. Remove the insulator pads from the fuel tank. Note the location of the insulator pads for installation.

Installation Procedure

Notice: Always re-attach the fuel lines and fuel filter with all original type fasteners and hardware.

Do not repair sections of fuel pipes.


    Object Number: 12743  Size: SH
  1. Reinstall the insulator pads on the fuel tank.
  2. Reinstall the insulator clips.
  3. Connect the quick-connect fittings at the fuel sender. Refer to Plastic Collar Quick Connect Fitting Service
  4. Connect the fuel feed and fuel return pipe assemblies.
  5. Position the EVAP pipe on the insulator clips as noted during disassembly.
  6. Reinstall the retaining clip on the EVAP pipe.
  7. Reinstall the modular fuel sender assembly. Refer to Fuel Sender Assembly Replacement

  8. Object Number: 12739  Size: SH
  9. With the aid of an assistant, position and support the fuel tank.
  10. Reinstall the EVAP pipe to the rear of the fuel tank.
  11. Reinstall the EVAP pipe to the fuel sender assembly.
  12. Connect the fuel sender electrical connector and the fuel sender retaining clips.
  13. 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.

  14. Reinstall the fuel tank retaining strap attaching bolts (4).
  15. Tighten
    Tighten the front and rear fuel tank retaining strap bolts (4) to 47 N·m (35 lb ft).

  16. Connect the quick-connect fittings. Refer to Plastic Collar Quick Connect Fitting Service
  17. Reinstall the modular fuel sender, and connect the fuel tank pressure sensor electrical connectors.
  18. Connect the EVAP pipe at the front of the fuel tank.

  19. Object Number: 12742  Size: SH
  20. Connect the fuel tank filler EVAP pipe to the fuel tank.
  21. Tighten
    Tighten the fuel tank filler pipe hose clamp to 2.5 N·m (22 lb in).

  22. Connect the fuel tank filler pipe to the fuel tank.
  23. Tighten
    Tighten the fuel tank filler pipe hose clamp to 2.5 N·m(22  lb in).

  24. Reinstall the heat shield and the heat shield attaching screws.
  25. Reinstall the rubber exhaust pipe hangers.
  26. Lower the vehicle.
  27. Add fuel and reinstall the fuel fill pipe cap.
  28. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in engine electrical.
  29. Inspect for leaks.
  30. 23.1. Turn the ignition switch ON for 2 seconds.
    23.2. Turn the ignition switch to OFF for 10 seconds.
    23.3. Turn the ignition switch ON.
    23.4. Check for fuel leaks.
  31. Reinstall the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement in engine mechanical.