Steering Wheel Rocking
 

I have a 2004 Blazer with low miles 91K and the steering wheel is rocking. You can grab the steering wheel with your hands in opposite postion 3 and 9, 12 and 6 etc it moves just enough to be noticeable. The rig has tilt but it doesn't feel like the tilt is the issue. It feels like it's the upper bearing. Has anyone else had this issue and is it just an issue of something being loose or am I going to need to order some parts.