GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 34730-1A Fuel Pressure Gage
    • J 37088-A Tool Set, Fuel Line Quick-Connect Separator

Removal Procedure


    Object Number: 12773  Size: SH
  1. Relieve the fuel system pressure before servicing any fuel system connection. Refer to the Fuel Pressure Relief.
  2. Slide the dust cover from the quick-connect fitting.

  3. Object Number: 12776  Size: SH

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

  4. Blow any dirt out of the fitting, using compressed air.

  5. Object Number: 12780  Size: SH
  6. Choose the correct tool from the J 37088-A Tool Set for the size of the fitting. Insert the tool into the female connector, then push inward in order to release the locking tabs.

  7. Object Number: 12782  Size: SH
  8. Pull the connection apart.
  9. Caution: If necessary, remove rust or burrs from the fuel pipes with an emery cloth. Use a radial motion with the fuel pipe end in order to prevent damage to the O-ring sealing surface. Use a clean shop towel in order to wipe off the male tube ends. Inspect all the connections for dirt and burrs. Clean or replace the components and assemblies as required.

  10. Using a clean shop towel, wipe off the male pipe end.
  11. Inspect both ends of the fitting for dirt and burrs. Clean or replace the components as required.

Installation Procedure


    Object Number: 12784  Size: SH

    Warning: 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 engine oil to the male pipe end.

  2. Object Number: 12786  Size: SH
  3. Push both sides of the fitting together in order to cause the retaining tabs to snap into place.

  4. Object Number: 12787  Size: SH
  5. Once installed, pull on both sides of the fitting in order to make sure the connection is secure.

  6. Object Number: 12789  Size: SH
  7. Reposition the dust cover over the quick-connect fitting.