first off i have not searched. i was just going to be lazy and post up.
i purchased my 99 GC back in 04. when i purchased it it had a little noise coming from the back axle. the previous owner said it was a wheel bearing. finally i am getting ready to move and need to sell the jeep, so i am going to fix it. (we don't drive it much.) my local Firestone automotive store said that it could be 1) wheel bearing, 2) axle bearing or 3) center diff.
i really don't think its the center diff. i was going to ask the experts here what they thought. the jeep has right at 125xxx miles.
thanks for the help.