Gas Cap Troubles
 

I'm sure I posted a thread about this before but now I know a lil more about my problem I'm having which is my "Tighten Gas Cap" on my DIC comes up. Well it only comes up after my car sits over night or while I'm at work. Not after that. I did replace it with a OEM cap from dealership (which its tight and doesn't move). I have no idea what to do next. Anyone with help it would be nice. Thanks for looking.