GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 21288  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 the Fuel Pressure Relief Procedure .
  3. Drain the fuel tank. Refer to Fuel Tank Draining .
  4. Remove the fuel tank filler pocket.
  5. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Remove the fuel filler pipe shield.
  7. Remove the exhaust system from the catalytic converter back. Refer to Muffler Replacement in Engine Exhaust.
  8. Remove the exhaust pipe heat shield and the exhaust muffler heat shield.
  9. Remove the rear axle assembly. Refer to Rear Axle Replacement in Rear Drive Axle.

  10. Object Number: 183854  Size: SH
  11. Clean all fuel pipe connections and surrounding areas before disconnecting the fuel pipes in order to avoid possible contamination of the fuel system.
  12. Disconnect the EVAP pipes (1) at the canister (2).
  13. Disconnect the fuel return pipe (4) at the rear quick-connect fitting. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  14. Disconnect the EVAP purge pipe (3) at the rear quick-connect fitting. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  15. Disconnect the fuel feed pipe at the fuel filter inlet. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  16. Cap the fuel pipes in order to prevent possible fuel system contamination.
  17. Disconnect the fuel tank vent valve from the rear brake hose bracket.

  18. Object Number: 175268  Size: SH
  19. Remove the rear pipe clip.

  20. Object Number: 228629  Size: SH
  21. Disconnect the fuel sender and the EVAP canister vent valve electrical connectors.

  22. Object Number: 173855  Size: SH
  23. With the aid of an assistant, support the fuel tank.
  24. Notice: Do not bend the fuel tank straps. Bending the fuel tank straps may damage the straps.

  25. Remove the left fuel tank strap attaching bolt (3) from the underbody bracket (1).
  26. Lower the left fuel tank strap (2).
  27. Remove the EVAP canister vent solenoid and bracket (4).

  28. Object Number: 174089  Size: SH
  29. Remove the right fuel tank strap attaching bolt.
  30. Lower the right fuel tank strap.
  31. Remove the fuel tank.

  32. Object Number: 183852  Size: SH
  33. Place the fuel tank in a suitable work area.
  34. Remove the fuel tank insulators if necessary.

  35. Object Number: 173809  Size: SH
  36. Disconnect the electrical harness clip (2) from the fuel tank flange (1).

  37. Object Number: 172721  Size: SH
  38. Remove the fuel sender assembly (3) and the rear fuel and EVAP pipes from the fuel tank. Refer to Fuel Sender Assembly Replacement .

Installation Procedure


    Object Number: 172721  Size: SH
  1. Install the fuel sender assembly (3) and the rear fuel and EVAP pipes to the fuel tank. Refer to Fuel Sender Assembly Replacement .

  2. Object Number: 173809  Size: SH
  3. Connect the electrical harness clip (2) to the fuel tank flange (1).

  4. Object Number: 183852  Size: SH
  5. Install the right fuel tank insulator.

  6. Object Number: 183856  Size: SH

    Important: The fuel sender pipes must route below the left fuel tank insulator.

  7. Align the insulator (2) on the top of the fuel tank with 15-25 mm (0.6-1.0 in) of the insulator extending beyond the edge of the fuel tank front flange (3).
  8. Fold the insulator down.
  9. Secure the insulator to the flange (4). The alignment notch on the insulator lines up with the fuel tank flange edge (1).

  10. Object Number: 174089  Size: SH
  11. With the aid of an assistant, position and support the fuel tank.
  12. Position the right fuel tank strap up.
  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. Install the front right fuel tank strap attaching bolt.

  15. Object Number: 173855  Size: SH
  16. Position the EVAP canister vent solenoid bracket (4) between the left fuel tank strap (2) and the underbody bracket (1).
  17. Install the front left fuel tank strap attaching bolt.
  18. Tighten
    Tighten the front fuel tank strap attaching bolts to 33 N·m (24 lb ft).


    Object Number: 183854  Size: SH
  19. Connect the fuel tank vent valve to the rear brake hose bracket.
  20. Remove the caps from the fuel pipes.
  21. Connect the fuel feed pipe at the fuel filter inlet. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  22. Connect the EVAP purge pipe (3) at the rear quick-connect fitting. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  23. Connect the fuel return pipe (4) at the rear quick-connect fitting. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  24. Connect the EVAP pipes (1) to the canister (2).

  25. Object Number: 228629  Size: SH
  26. Connect the fuel sender and the EVAP canister vent valve electrical connectors.

  27. Object Number: 175268  Size: SH
  28. Install the fuel and EVAP pipes into the pipe clip.
  29. Align the fuel and EVAP pipes into a flat position.
  30. Install the pipe clip bolts.
  31. Tighten
    Tighten the pipe clip bolt to 5.5 N·m (49 lb in).

  32. Install the rear axle assembly. Refer to Rear Axle Replacement in Rear Drive Axle.
  33. Install the exhaust system heat shields and attaching screws.
  34. Install the exhaust system. Refer to Muffler Replacement in Engine Exhaust.

  35. Object Number: 21288  Size: SH
  36. Install the fuel filler pipe shield.
  37. Lower the vehicle.
  38. Install the fuel tank filler pocket.
  39. Refill the fuel tank.
  40. Install the fuel filler cap.
  41. Connect the negative battery cable.
  42. Inspect for leaks.
  43. 31.1. Turn the ignition switch ON for 2 seconds.
    31.2. Turn the ignition switch OFF for 10 seconds.
    31.3. Turn the ignition switch ON.
    31.4. Check for fuel leaks.
  44. Perform the Idle Learn Procedure. Refer to Idle Learn .