Just to share a little experience. My 2001 Buick Century would not start and stay running after I had shut it off after driving for a while.
Remedy: I don''t think my gas cap is venting so it created almost like a reverse pressure and didn''t allow the fuel to go to the fuel pump. So I opened the fuel tank cap to relievethe pressure, kept my foot on the gas slightly for a little as I started up and drove for a while. After a few miles it was ok. Problem only occure only when it is hot outside and when the car has been driven say 30 minutes or more.

ok so whats your question man...

sounds like you found your own problem and fixed it...
is that the case?[img]smileys/smiley11.gif[/img]

I agree sounds like you fixed it, maybe a new gas cap would help also