Chevrolet Repair: 1989 Chevy S-10 Blazer Transfer Case, transfer case, blazer

Question
My neighbor told me to check the fluids in the Transfer Case but I can't find it and if I do find it how do I check?

Answer
On the back side of the transfer case there are two plugs, I believe an 18mm wrench size or a square 3/8 drive nuts.  You must unscrew the top one.  Make sure that you have fluid just below the fill port, the top one.  If not, you can fill it to that level.
Jimmy