Been under the truck for the last 2 hours and made a few test drives. Nothing has changed.
Found 2 loose running board bolts and 2 loose cross member bolts. Not that loose but enough that I could put a few more turns on the nuts.
Every nut/bolt/rivet has been checked under there. The only other things could be cab mounts although they are tight and the rubber is good or the missing rubber on the box/bed bolts.
May have to admit defeat and live with it, although that is not my style.
