[Pullerguy]

Take a look at the rear diff, there should be a data tag on the housing left and above the fill/check plug. That will show the build date, if is is a 2012 date is is original, a later build date it has been changed. The only way to check is to pill the diff and check the nut. 20% stay tight, 80% are prone to coming loose and fail.
Mileage or driving style doesn't appear to be a determining factor. We have seen them loose, <15ft,lbs at under 400 miles, the other end of the chart >8000 miles and still tight.
Kind of like rolling the dice, some rolls are winners some rolls crap out.
Les

 

[Pullerguy]

Jafo2:
Shoot us a PM with an email address we will send you written guidelines to pull the rear diff, they will save you time and labor over the way we did it in the video.

Pullerguy aka Les

 

[Pullerguy]

Clothier, thank you for the referral, Gary contacted us and we are going to travel to northern Utah and get him taken care of on the 20th of this month. We have family that live right close to him so we can swing by and visit a bit while we are up that way.
Les

 

[Pullerguy]

Yup we are thinking the same thing. Gary has the diff out, he wasn't looking forward to reinstalling it after the pinion nut was done. We will install the diff for him. When that is complete we will go down the road a bit and watch our nephew play with his new plasma table, check out his metal break and roll.

Take care stay safe stay healthy.
Les

 

[Pullerguy]

BStone:

Send us an PM with a email address and we will get you the information you are looking for.

Les