4 wheel drive transfer case on 1994 Chevrolet S10 Blazer

How can I get my 4-wheel drive to kick in? It clicks but doesn't go into 4-wheel drive.

Asked by for the 1994 Chevrolet S10 Blazer
make sure its in neutral. but i have the same problem. we have narrowed it down to bein the transfer case motor. it cost a lot. around $140-$150. and those are the cheapest ones i found that were new
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It could be the Encoder motor also. If the lights are flashing on the 4WD button then that may be your problem.