Recently had my truck at the dealer for a possible transmission issue. I have a note on my Service quote that says "Noticed pronounced steering shaft clunk during road test. Intermediate steering shaft should be repacked or replaced". I will admit, I know basically nothing about steering and after reading this note, I can KIND OF notice a "clunk" but nothing that's really jumping out at me. Average cost to "repack" or replace ? Possible consequences if ignoring this and not having anything done about it? Difficulty level for a DIY job?