So I'm driving along the other day in my 01' GT and all of a sudden my "check fuel cap" gauge lights up. I've tried taking it off and putting it back on a bunch of times but the light wont go off. Anyone know if theres something i'm doing wrong? Is there something simple that i'm doing wrong or is it something for the dealership to fix.

 

I had a crack in my fuel filler neck when that happened.

 

the rubber seal on mine got some dirt on it.when the light came on