Have not resolved the vibration yet. Followed all suggestions with nothing pointing to a fix. I had the truck out for a 30 mile drive yesterday and the vibration seemed to dissipate as the road got smoother and would come back on a rough stretch. I'm starting to focus on the rear shocks. I think they may be undersized and allow the harmonic vibration. They were extras I had laying around the shop. Does anyone have suggestions for shocks that would be appropriate for this application?
