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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 8.1L (Introduction) >> Repair Instructions >> Quick Connect Fitting(s) Service (Plastic Collar) >> Removal Procedure
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Removal Procedure

IMPORTANT: There are several types of plastic fuel and evaporative emission (EVAP) quick connect fittings used on this vehicle. The following instructions apply to all types of plastic quick connect fittings except where indicated.
    Fig 1: Blowing Dirt Out Of Fitting (Plastic Collar)
    GM155410Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
  2. CAUTION: Wear safety glasses when using compressed air in order to prevent eye injury.
  3. Using compressed air, blow any dirt or debris from around the quick connect fitting.
  4. Fig 2: Squeezing Quick Connect Fitting Release Tabs (Plastic Collar)
    GM12777Courtesy of GENERAL MOTORS CORP.
  5. Squeeze the plastic quick connect fitting release tabs together to disengage the quick connect fitting. (This step applies to Bartholomew style fittings ONLY)
  6. Fig 3: Disengaging Quick Connect Fitting (Plastic Collar)
    GM1205675Courtesy of GENERAL MOTORS CORP.
  7. Squeeze where indicated by the arrows on both sides of the plastic ring to disengage the quick connect fitting.
  8. Fig 4: Disengaging Quick Connect Fitting (Plastic Collar)
    GM1306341Courtesy of GENERAL MOTORS CORP.
  9. Squeeze where indicated by the arrows on both sides of the plastic ring to disengage the quick connect fitting.
  10. Fig 5: Pulling Connection Apart (Plastic Collar)
    GM12778Courtesy of GENERAL MOTORS CORP.
  11. Pull the quick connect fitting connection apart.