Loud snapping noise in 4x4 while pulling - possibly transfer case?

[DonFitzwater]

I was just looking for chips or debris.

Kind of pointless. If there are chips or debris, it'll be very obvious when you pull the drainplug.

 

[Ozymandias]

There is a mag at the bottom of the case that collect such material.

 

[Blakers]

There is a mag at the bottom of the case that collect such material.

Thanks!