I just had my rear diff replaced as well- bad outer axle bearings for sure- possible internal damage as well.
Took my titan in on Friday,
problem diagnosed in about and hour,
new diff ordered,
Deler rents me a Dodge 1/2ton as a rental (so what if it's a Mopar, it's still a truck)
new diff delivered Monday,
Titan picked up Tuesday AM.
I was truly impressed- the first time ever ever been treated that well at a dealership. (Beau Townsedn Nissan, Dayton, OH- great job!!)
Oh- and the rear diff with e-locker is $2800 not including the labor to put it in.
