x2...let us know if that fixed it?idle learn procedure maybe.....just an thought, this link is for ls engines.
http://www.hotrodlane.cc/new ls links page/idle learn procedure.htm
It idle better while you had it on the charger, then check the alternator and make sure its not running off the battery.I have a 2002 SS Camaro that idles really rough. It kind of surges when it idles.When I put in gear It wants to die. I recently charged the battery and when it was on the charger and running it seemed to idle a lot better. Anybody have a Idea?