Hi my name is Dan, But everyone just calls me by my last (BAKER). I have a "check Gas cap" light on in my dash. I replaced the Gas Cap and cleared all of the codes. Then I tried to get a Smog. Just find out that I needed to drive around for about 100miles so the codes could reset. The Smog Man said that my truck would have passed, but the machine could not read my codes. So no Smog certs for me. Any one have any experience with this problem?