[Richard]

Greg,

Let’s base the answer on diagnosis you can do. Remove the skirt around the steering column.

While observing the bottom of the steering column, look for any out of round movement of the rod exiting the steering column as you work the wheel back and forth. Also put your hand there and feel for any loose play. If you can feel ANY play, it needs a lower bearing.

Now look at the attachment of the rod exiting the steering column and how it is attached to the upper u joint. Is there any loose play? It should not have ANY play as you move the steering wheel.

Now, put your hands on the actual u joint. Move the steering wheel and feel for any relative motion between the upper and lower yokes. If you feel ANY the u joints should be replaced.

Now get under the coach (with proper support) and look at the intermediate steering shaft coming out of the floor and attached to the steering gear box. You may, and you may not, have a rubber isolation device installed on the intermediate shaft. Everyone I have seen is now kaput, with the rubber very soft. It allows a ton of free play. There is a post on how to remedy that.