GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

Caution: Always wear safety goggles when working with fuel in order to protect the eyes from fuel splash.

Caution: Fuel Vapors can collect while servicing fuel system parts in enclosed areas such as a trunk. To reduce the risk of fire and increased exposure to vapors:

   • Use forced air ventilation such as a fan set outside of the trunk.
   • Plug or cap any fuel system openings in order to reduce fuel vapor formation.
   • Clean up any spilled fuel immediately.
   • Avoid sparks and any source of ignition.
   • Use signs to alert others in the work area that fuel system work is in process.

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Drain the fuel tank. Refer to Fuel Tank Draining .
  3. Remove the rear seat cushion from the vehicle. Refer to Rear Seat Cushion Replacement Body and Accessories.

  4. Object Number: 55723  Size: SH
  5. Disconnect the fuel pump, the fuel level sensor (fuel gauge sending unit), and the fuel tank pressure sensor electrical connectors (2).
  6. Push the electrical connectors through the grommet (1) in the floor of the vehicle.
  7. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle Vehicle Lifting and Jacking in General Information.
  8. Remove the muffler and exhaust pipe assembly. Refer to Rear Exhaust System Replacement .

  9. Object Number: 237943  Size: SH
  10. Remove the one clamp and the fuel filler hose (2) from the fuel tank filler neck.
  11. Remove the one clamp and the fuel breather hose (3) from the fuel tank breather neck.
  12. Remove the one clamp and the EVAP canister air inlet hose (4) from the EVAP canister air inlet pipe (if equipped).

  13. Object Number: 237939  Size: SH
  14. Remove the two bolts (2) from the two parking brake cable brackets on the vehicle underbody and move the cable aside.
  15. Remove the one clamp and the EVAP canister vapor hose (1) from the EVAP canister vapor pipe (3).

  16. Object Number: 237942  Size: SH
  17. Disconnect the fuel feed quick connect line (2) from the fuel feed pipe (1). Refer to Plastic Collar Quick Connect Fitting Service .
  18. Disconnect the fuel return quick connect line (3) from the fuel return pipe (4). Refer to Plastic Collar Quick Connect Fitting Service .
  19. Remove the five fuel tank mounting bolts and the fuel tank from the vehicle underbody.

Installation Procedure

    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.

  1. Install the fuel tank to the vehicle underbody and secure with the five mounting bolts.
  2. Tighten
    Tighten the fuel tank mounting bolts to 25 N·m (18 lb ft).


    Object Number: 237942  Size: SH
  3. Connect the fuel feed quick connect line (2) to the fuel feed pipe (1). Refer to Plastic Collar Quick Connect Fitting Service .
  4. Connect the fuel return quick connect line (3) to the fuel return pipe (4). Refer to Plastic Collar Quick Connect Fitting Service .

  5. Object Number: 237939  Size: SH
  6. Connect the EVAP canister vapor hose (1) to the EVAP canister vapor pipe (3) and secure with the clamp.
  7. Align the parking brake cable brackets and secure with the two bolts (2) to the vehicle underbody.
  8. Tighten
    Tighten the parking brake cable bracket bolts to 15 N·m (11 lb ft).


    Object Number: 237943  Size: SH
  9. Connect the fuel filler hose (2) to the fuel tank filler neck and secure with the clamp.
  10. Connect the fuel breather hose (3) to the fuel tank breather neck and secure with the clamp.
  11. Connect the EVAP canister air inlet hose (4) to the EVAP canister air inlet pipe (if equipped) and secure with the clamp.
  12. Install the muffler and exhaust pipe assembly. Refer to Rear Exhaust System Replacement .
  13. Lower the vehicle.

  14. Object Number: 55723  Size: SH
  15. Connect the fuel pump, the fuel level sensor, and the fuel tank pressure sensor electrical connectors (2).
  16. Install the rear seat cushion to the vehicle. Refer to Rear Seat Cushion Replacement Body and Accessories.
  17. Refill the fuel tank.
  18. Connect the negative battery cable.
  19. Tighten
    Tighten the negative battery cable terminal retainer to 5.5 N·m (4 lb ft).

  20. Turn ON the ignition in order to pressurize the fuel system.
  21. Turn OFF the ignition.
  22. Inspect for fuel leaks and repair as necessary.