I've heard this squeaking sound for the last month, and while doing my brakes today I noticed when I kicked the tire while up in the air I'd hear it. So isolated it to the back of the transfer case....? Got a good used one put in a few months ago(T Case) and it`s still under warranty which is good. but anyone ever heard or seen this. It doesn`t sound like in T case but behind and to the top off it... Flex coupler....maybe....I don`t know still quite an amateur DIYer...lol Definitively gonna take it back and get it looked at since it`s still under warranty

 

There is nothing about our t/cases that will squeak. there must be something lese that may have been moved and never tightened when installing the new t'case.
Have you also had you front drive shaft rebuilt or replaced?

 

Ya alls good. Went mudding last night and its gone.lol Still gonna get them to look a it though, just in case. And ya I got a new front driveshaft that's fully serviceable.