I have 06 grand prix and it whines and must leak power steering fluid (I haven't found where) only when its cold out. Otherwise sounds and drives perfectly? At first I was adding power steering fluid but only takes VERY little but because of the very stupid place its at I am sure I am over filling but it works, drives great. Last time on recommendation I used lucas power steering stop leak and will be again today lol. Does anyone have any ideas that might help and maybe a reason why it only happens when cold out? Money is tight, am hoping not to have to bring it in.
tyvm Eric