1993 s10 blazer 4x4 problems

i have a 93 blazer 4.3 vortez the 4x4 worked great one day the next nothing i have push button 4x4 the light won' t even work any ideas also where can i get a vacuum diagram for this blazer?

If the light doesn't work, I would check the fuse first.

Does the light work on the 2wd button?

James

it only has 4hi and 4 lo light where is this fuse at

it was the fuse ha ha