GM-GMC: 95 jimmy, transfer case

Question
my truck is stuck in 4 low can you help

Answer
The first thing I would like you to do is to call your dealer (have your VIN handy) and ask them if there are any outstanding recalls for your truck.  There was a transfer case switch recall on some of those vehicles which would not allow the transfer case to function properly.  We can go from there.
Hope this helps