I'm having the same problem on my 2004 xfire, everything thing that's has been mention in this thread has been fixed on my car, and again still the same issue about a week are more later (stalling no starting)wait 30 minutes and have waited up to 9 hrs before it will restart.this stalling happens at high speeds on Highway are when engine slows down and even when ignition is shut off when driving 45 are more
The best thing for all of us to do is report this to the NHTSA 1-800-424-9393 maybe if enough us to report the problem we can get a recall.I don't know about you guys but I'm tired of spending money!!!! And the problem still exist!!!!!!