Thank you for posting about this. I have the same problem. I had posted about this a few months ago and had yet to figure out the problem. I have an 04 Cavalier but it only seems to stick when its cold out. It either sticks or it keeps going until its at the bottom until I can shut the engine off and let it cool. Then if I play with the ignition I can get it reset. I will try the remedy that was posted here. Thanks!