I just dropped off my car with Stevan earlier this evening but if you haven't found one by time I get it back I can swap out with you. If you're suspecting the gas cap you might swing by the Jiffy Lube on Precinct Line Rd. They have a gas cap tester as part of their inspection equipment. When I suspected my Yukon gas cap was bad last week, they checked it out for free. Several years ago they failed a cap on my 90 miata and it was just a crack in the o-ring. went to o'reillys pulled the o-ring off and matched up a replacement for $0.50. Fixed the problem without having to buy a new cap.