sometimes like in my neighborhood or a parking lot, my jeep sounds like its moaning. at really slow speeds while turning it sounds like heavy rubber being twisted. it sounds like its coming from the rear because the rear shudders when coming out of the turn. its kind of freaking me out.
i will check that stuff when i get home tonight. i think the ps fluid is low but i don't think that is everything. it shudders really bad when i make a slow turn and sounds like a creaking old ship about to snap in half from hurricane winds!
make sure your transfer case isn't stuck in 4wd part time. in part time the wheels are spinning at the same speed. i've tried it before and it sounds exactly as you said. check the transfer case linkage.
you should hear and feel the tcase lever slighty "snap" into position when you shift back into 2WD. there should also be an audible difference in the sound of your jeep. it gets a bit quieter when it's properly shifted back into 2WD.
i used to have the same problem as you until i had my tranny rebuilt, thankfully under warranty. the dealer must has reset the linkage on the tcase when they set it back in place.
ALL the fluids were changed a few weeks ago. but i think it could be getting stuck 4PT because i am running it in 4FT with no sounds. i shifted from neutral to full time a little fast and got a nice back jarring. then i drove down the road and switched to part time and got another nice clunk, then shifted 2WD and got nothing. so its probably that. how will i be able to check the linkage? and how will i be able to adjust it. right now its freakin cold so i can't check at the moment.
i checked all the wheel bearings, they are still good. i tried checking if it was stuck in 4PT by throwing it in 2WD and rotating one lifted front wheel with the other on the ground till the transfer case clicked and i could freely rotate the front wheel. i drove it after that to check that it stayed in 2WD but the sound was still there. so its not the transfer case. i guess next is check the fluid levels in the diffs and PS fluid. its so clear i can't tell where the fluid is on the stick. could the diff have seized? it has had water in it and the fluids were changed, but maybe enough water was left to rust it together. also my diffs look wet on the bottom of the covers but its not leaking. it just looks like wet paper. could this be a problem? how much would a shop charge for differential work?