4 wheel drive will not engage on 1994 Chevrolet S10 Blazer

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

by in Colorado Springs, CO on December 17, 2010
2 answers
ANSWER by on December 17, 2010
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.
ANSWER by on February 15, 2015
It could be the Encoder Motor also. Cheapest place is Advance Auto to get the part.
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how do I engage the 4 wheel high on a 1994 Chevrolet s10 Blazer am I supposed to be driving while doing this or am I supposed to stop and put it in neutral?