Oldsmobile/Buick Repair: Buick gas tank, buick park avenue, gas nozzle

Question
What is causing my 1997 Buick Park Avenue to malfunction? When I fill up the tank, the gas nozzle won't shut off, whether you leave it on automatic or fill up manually.  Unless about 20 different gas stations all have the same problem with their nozzles, it is not the station's problem.  What could be causing this?  The fuel gauge is working fine...I'm stumped and tired of smelling like gas.  The car dealership said it was a problem with the gas station but, I don't think they even looked at the car.  Thanks for your help.

Answer
HI BRENDA,HMM 20 STATIONS WITH BAD PUMPS,LOL I DON,T THINK SO..HAVE YOU HAD ANY SERVICE DONE REQUIREING YOUR TANK TO BE REMOVED SUCH AS FUEL PUMP ? IT REALLY SOUNDS LIKE THE VENT IS EITHER PLUGGED OR THE HOSE IS PINCHED.IF THE VENT IS PLUGGED INSTEAD OF FILLING UP WITH JUST FUEL THE FILL TUBE WILL FILL WITH AIR THEN FUEL AIR CANNOT SHUT PUMP OFF ONLY FUEL.HAVE THAT VENT SYSTEM CHECKED INCLUDEING THE CHARCOAL CANISTER UNDER THE HOOD TY PLEASE VOTE FOR ME BILLYMAC