OK, so I have searched and done some testing, now I need some help. I replaced my rear output shaft seal(transfer case), and a u-joint on the rear. I drove the truck with the diff locked and only the front driveshaft on with no vibes, it did seem as though there was more driveline slack(banging) than before. I put the rear back on and now I get a clicking coming from somewhere underneath and vibes when I get over 25mph. I checked the trans and engine mounts, the seeem fine. both rear uj's are fine(no play) the front uj's seem fine. I had no vibe's before I broke the cv wheeling a few weeks ago.
Thanks in advance