4 Wheel Drive Problem

My 95 Jimmy started blowing fuses when I would try to put it into 4X4. Sometimes it would work and other times it would blow the fuse. Now, it doesn't do anything. It works fine in 2 Wheel Drive, but, now, nothing happens when I try to put it in 4X4. Any ideas.

Had the same problem. These switches are notorious for internal shorts. It's a $25 part but
it's about 2 hours of work to get to it. But it does
need to go.

maybe check the wiring behind the switch