I know this has been posted before, but a search listed no info. I have a 2001 Tahoe 2wd. The steering has a noise/vibration in it when you are turning and hit a bump. GM has issued 2 TSB's. The first is to grease the steering splines. It is the second TSB that I am looking for. Any info is needed. Part numbers of the kit and TSB#. Thanks.