I have a 99 grand prix gt coupe, I just recently moved to denver from kansas and now my car has issues with idle. If it's not warmed up or if at a stop light, the idle can't stay somewhat constant, and will shudder, it will occasionally just about die, but hasn't died yet (knock on wood) but then also the other night i all of a sudden, the gauges and dummy lights all came on and the radio would reset, but hasn't done it since. I lived in denver last year and never had these issues and knowing that there is a performance hit being out here because of the lack of oxygen. And then last night the check engine light finally came on. Any ideas?
99 GP GT 2dr 3800 Series II
Also I have found this thread and it kinda sounds like my issues
http://www.grandprixforums.net/f17/0...but-20775.html
