WHEN I ATTEMPT TO FILL MY GAS TANK, THE GAS COMES BACK OUT OF THE TANK. I HAVE TRIED THIS BY GOING SLOW & WHEN THE GAS SHUTS OFF, I SHAKE THE JEEP TO GET THE AIR OUT OF THE TANK - WHEN I DO THIS THE AIR POCKET PUSHES GAS BACK OUT OF THE TANK EVEN WHEN I DON'T HAVE THE FUEL NOZZLE STILL IN THE TANK. THIS ISN'T THE FIRST TIME THAT THIS HAS HAPPENED - I PURCHASED THE JEEP IN ST. AUGUSTINE, FL IN JAN., 2011 & I HAD TO GET GAS RIGHT AFTER PURCHASING IT. THE FIRST TIME I HAD THE AUTO SHUT-OFF ON THE GAS FILLER - IT CLICKED OFF & GAS STARTED FLOWING BACK OUT OF THE TANK. AT FIRST I THOUGHT THAT THE GAS FILLER NOZZLE WAS DEFECTIVE, & NOTIFIED THE CONVENIENCE STORE ABOUT THE OVERFLOW - I ASKED FOR SOME "DRY AGENT" TO CAPTURE THE GAS THAT HAD SPILLED OVER. THE ATTENDANT SHUT THE PUMP STATION DOWN, & SAID THEY WOULD CALL SOMEONE TO CHECK OUT THE FILLER NOZZLE. THE NEXT TIME THAT I NEEDED GAS (BACK IN ORLANDO, FL) THE JEEP WAS BACK NEAR EMPTY (FUEL LIGHT "ON"). I USED THE AUTO CLICK-OFF ON THE FILLER - SAME[XXX], DIFFERENT DAY! I HEARD THE "CLICK" OF THE AUTO-SHUT OFF & WITHIN A SECOND, GAS WAS POURING BACK OUT OF THE FUEL NECK OF THE JEEP. PEOPLE WHO WERE PUMPING THEIR OWN GAS HEARD THE FUEL COME OUT OF THE TANK (AND HEARD ME CURSE, LOL!) THEY COULDN'T BELIEVE WHAT THEY SAW. I'M NOT SURE HOW MUCH FUEL POURED BACK OUT OF THE FUEL NECK OF THE JEEP (AND THE TANK FOR THAT MATTER), BUT THERE WAS A POOL OF FUEL ON THE GROUND. I NOTIFIED THE FUEL ATTENDANT OF THE SITUATION & THEY DIDN'T HAVE A