jsquared3000

Hello all my first post here at the Chevy Forum. I have been a long time member of the Cadi forum. I have a 2002 Burban LT with auto ride. I recently noticed a leak from the transfer case. Not sure what the part is called, but there is a round black plastic part that is screwed into the case, next to the fill plug, had a bad O ring. When I drained the case there was some metal shavings stuck to the plug. I replaced the O ring and refilled the case with Autotrac II. Now when the 4wd is engaged there is a humming/moaning sound coming from the T Case. Just wanted to know if I now need to replace the whole case or if there are bearings or other parts in the case that I could replace myself. I can't seem to find a part number on the case either. Any help would be greatly apprieciated. I have recently become a broke college student and am hoping that I don't have to buy a $1000 transfer case.

jsquared3000

Hello?
Any one have any ideas?

mudmaniac

What is Autotrac II?
My transfer case calls for Dextron II transmission fluid.

jsquared3000

My suburban has the four button 4wd arrangement w/ Auto 4WD. I was told that it requires GM's Autotrac II transfer case fluid.

mudmaniac

That's great as long as you checked. I found it listed in my owners manual.