4 wheel drive will not engage on 1994 Chevrolet S10 Blazer

When I hit the 4 wheel drive switch it does not engage

2 answers 1 comment
THERE IS A FRT DIFFERENTIAL ACTUATOR THAT CAN EITHER COME UNPLUGGED OR CAN GO BAD IS THE MOST COMMON.
MIKE @ AUTO TECH PLAZA ON PLATTE
WE ARE OPEN TOMORROW 8-5 IF YOU NEED IT LOOKED AT.
Why won't my 4wd engage on my 94 s-10 blazer?
It could be the Encoder Motor also. Cheapest place is Advance Auto to get the part.