2016 Ram 1500 RWD 5.7 Hemi Transmission noise

[SudoObey]

Hello Everybody!
I drive a 2016 1500 2WD 5.7 Hemi. I am hearing a noise from my under carriage that increases as I speed up. I thought it was the rear wheel bearings, so I replaced those. The noise didn't stop. I jacked the rear of the truck up and put the truck in neutral and rotated the driveshaft by hand. I am hearing a noise from the transmission (heard in video). Is that a normal sound?

Link to recording

 

[slyangel9]

I had same issue, it was the pinion bearing

 

[Ken226]

Yea, I had to get a new pinion bearing too, at about 70,000 miles.

 

[Daw14]

Are you sure it’s not your u-joints ? Very common for them to make noise when going bad .