I have a 95 Blazer with a 4.3l and push button controls for 4 wheel drive. The problem started last year. It would only go into 4hi or 4lo if I was stopped and in neutral. Now this winter even stopped and in neutral doesn't work. The lights flash then it returns to 2hi. I've replaced the vacuum switch on the transfer case but that did nothing. I can hear the encoder motor run and the tccm click. I checked the vacuum accuator and it pulls in sometimes but not everytime. I seem to have good vacuum at the actuator. I'm lost. Bob
Ok I just got my 4x4 working again. I got it to work by taking out the 4wd, brake, and I believe the ctsy fuses for about one minute each and put them back in and now my 4x4 works like it used to. If that works for anyone else great, but if not then good luck finding a better solution to the 4x4 problem.
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You need to get yourself a New Transfer Case Motor they sell them in all auto part stores but yours is going to be more $$$$ cause you have the push button and when you go to the auto part store you need to tell them yours is push button not manual when i got mine last year it cost me a little over 250.00 and mine was for a 2003 blazer
Your blazer is equipped with a shift on the fly four wheel drive. That means that at speeds less than fifteen miles per hour you can shift into or out of four wheel drive by simply pushing the four wheel high button. If you wish to shift into four wheel low. Stop, put the transmission into park or neutral, and push the four wheel low button. Same procedure for shifting back out. Never shift into or out of four wheel low while moving. And be careful in four wheel low. At full throttle your still barely moving, you don't want to blow your engine up!