My dealer agreed to change out my carrier bearing and it did fix the slow speed "Hoot Owl" sound coming from about the center of the truck ... in the mornings or when cold.
However it exacerbated the minor vibe I had at 70mph and now the truck is almost intolerable. I'm going to try indexing the shaft in an effort to determin if they put it back in the wrong position. I'm hoping thats it...... THis is getting very tiresome.
I love this truck but the little stuff is killing it......

AND THIS is big stuff. Can't cruise or travel above 65mph..... it'll just wear ya out.