GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 34730 Fuel Pressure Gauge

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.

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Remove the retainer from the quick-connect fitting if applicable.

  3. Object Number: 157703  Size: SH
  4. Grasp both sides of the quick-connect fitting. Twist the female connector 1/4 turn in each direction in order to loosen any dirt within the quick-connect fitting.
  5. Caution: Wear safety glasses when using compressed air in order to prevent eye injury.


    Object Number: 155410  Size: SH
  6. Blow any dirt out of the quick-connect fitting using compressed air.

  7. Object Number: 12777  Size: SH
  8. Squeeze the plastic retainer release tabs.

  9. Object Number: 12778  Size: SH
  10. Pull the connection apart.
  11. Use a clean shop towel in order to wipe off the male fuel pipe end.
  12. Inspect both ends of the quick-connect fitting for dirt and burrs.
  13. Clean or replace components/assemblies as required.

Installation Procedure

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.

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: 155425  Size: SH
  1. Apply a few drops of clean engine oil to the male fuel pipe end.

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

  4. Object Number: 155399  Size: SH
  5. Pull on both sides of the quick-connect fitting in order to make sure the connection is secure, once installed.
  6. Install the retainer onto the quick-connect fitting if applicable.