I purchased a 2014 CTS last January. It was great in the snow. Now this winter when we go out on slick snowy roads the rear end feels like it is going to come around on you, but only for a second. Then the front seems to take over and it's ok, except it keeps doing this, very scary feeling. I took it back to the dealer and he says that he checked it all over and it's ok. Blamed it on the tires, said that I need to buy winter tires, but that might not make it better either. Has any one felt this issue? Let me know, Thanks.