Hey guys I'm hoping someone can help.. About a week ago someone tried siphoning gas from my car. My check engine light went on and I'm sure it's because I started the car from my Onstar app without knowing the gas cap was unscrewed. Now when I put gas I can smell it outside of the car and I could have sworn there was a silver flap that keeps the fumes inside of the gas cap and now it's just a straight hole into the tank. Unless I'm crazy and it was never there. Can someone with the same car post a picture of the outside of the gas tank with the cap unscrewed? I just wanna know if I'm being paranoid or not. Thanks!