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Home >> GMC >> 2002 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L >> Repair Instructions >> Quick Connect Fitting(s) Service (Plastic Collar) >> Installation Procedure

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.
  1. Apply a few drops of clean engine oil to the male fuel pipe end.
    Fig 1: Applying Engine Oil To Male Fuel Pipe End
    G01598906Courtesy of GENERAL MOTORS CORP.
  2. Push both sides of the quick-connect fitting together in order to cause the retaining tabs to snap into place.
    Fig 2: Pushing Fittings Together
    G01598907Courtesy of GENERAL MOTORS CORP.
  3. Once installed, pull on both sides of the quick-connect fitting in order to make sure the connection is secure.
    Fig 3: Ensuring Connection Is Secure
    G01598908Courtesy of GENERAL MOTORS CORP.