I wouldn't really sell it. I love my G6 lol. I was just rambling. I went outside after posting and the coolant levels are normal. It's been doing it a couple of days now that I think about it. I leave the house at 6 am and remote start my car beforehand and I noticed that my cars always cold but with the temps being around 20, I figured that it was just really cold out. I think its weird that it only happens on idle. You would think that if coolant was low the heat wouldn't work no matter what. Well a little bit from engine heat but thats not the case. I'm taking it to the dealership in the morning if I can get out of work. Any other suggestions?