So, I wanted to let you all know at the Nissan Dealership today they found out the issue with the rear end of my Titan, it was the dustcover on the pinion in front of the seal, it is just floating on the yoke and makes the noise that I am having issues with. The real bummer is, I have had this to the dealership before, and this time it was so noisy that I loaded it on a trailer to haul 75 miles to the dealer, while doing so, a ramp kicked off and the truck fell, bending the drive line. So almost a year into it, two visits there and a drive line now, I know the problem. Thanks, Ron.