Hello, just bought 01 yukon 4X4 with 100k and have started to notice a hard to explain "jerking" or "binding" noise when in reverse or drive and slowly turning the wheel to the left or right. You can actually feel it when it happens. I have not had the time yet to watch it from the outside of the vehicle when the problem happens. If anyone has heard of this type of problem I would love to get this problem fixed. By the way I love this forum.