GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Remove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

    Caution: Place a dry chemical (Class B) fire extinguisher nearby before performing any on-vehicle service procedures. Failure to follow these precautions may result in personal injury.

    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: Always maintain cleanliness when servicing fuel system components.

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .

  2. Object Number: 157703  Size: SH
  3. Grasp both sides of the quick-connect fitting. Twist quick-connect fitting ¼ turn in each direction in order to loosen any dirt within the fitting.
  4. Repeat for other fuel pipe fitting.

  5. Object Number: 155410  Size: SH

    Caution: Wear safety glasses when using compressed air in order to prevent eye injury.

  6. Use compressed air in order to blow dirt from quick-connect fittings at both ends.

  7. Object Number: 12777  Size: SH
  8. Squeeze the plastic tabs of the male end of the connector.

  9. Object Number: 12778  Size: SH
  10. Pull apart the connection.
  11. Repeat for the other fitting.

  12. Use a clean shop towel in order to wipe off the male pipe end.
  13. Clean or replace any components and assemblies as required.

Installation Procedure


    Object Number: 155425  Size: SH

    Caution: Always apply a few drops of clean engine oil to the male pipe ends before connecting the fuel pipe fittings in order to reduce the risk of fire and personal injury. 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. Apply a few drops of clean oil to the male pipe end.

  2. Object Number: 155771  Size: SH
  3. Push both sides of the quick-connect fitting together in order to snap the retaining tabs or fingers in place.

  4. Object Number: 155399  Size: SH
  5. Pull on both sides of the quick connect fitting in order to secure the connection.
  6. Tighten the fuel filler cap.
  7. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  8. Use the following procedure in order to inspect for leaks:
  9. 6.1. Turn ON the ignition, for 2 seconds.
    6.2. Turn OFF the ignition, for 10 seconds.
    6.3. Turn ON the ignition.
    6.4. Inspect for fuel leaks.