1998 Chevy Blazer 4WD not shifting back to 2h

JDICKSON

MEMBER
1998 CHEVROLET BLAZER
6 CYL
4WD
AUTOMATIC
150,000 MILES

I have tried to shift back to 2h and all that happens is the light on the switch flashes. I can shift from 4h to 4l and back but not to 2h. I was told that if both 2h and 4l buttons pressed the trans case will go into neutral. I've tried that and don't work. I hear clicking at the trans case when 2h button is pushed but nothing shifts. Anything I can try before I buy a $200 actuator.

2 Replies

JMALECKI

MECHANIC
118 POSTS

Hello
You can try to unbolt the transfer case (endcoder) motor and shift it manually, if you can its the motor thats bad if not its in the transfer case.
John

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Monday, September 7th, 2009 AT 4:45 PM

TUNEUP1200

MEMBER
18 POSTS

You will need: small screwdriver, q-tips, and rubbing alcohol.
Pop out the 4WD button assembly from the dash. Unplug the the two wire connectors. Hold the button assembly in your hand face down. Make sure you are in a place that, if you were to drop something small you can find it easily, but lets just hope you're careful. With a small screwdriver, pry the back of the assembly from the front. Remember to keep the face down in your hands at all times. You see those blue boots with metal contacts on them? These are the things that will fall out easily. Take your time, remember where these boots are located they will pop out easily. Now with a q-tip dipped in alcohol gently clean the metal contacts in the blue boots. Then, with the q-tip and alcohol, clean the whole face of the board that the blue boots come in contact with, paying close attention to the white circle patterns on the board. They may not look dirty but it doesnt take much to make this assembly act nutty. When done cleaning and parts a fully dry, re-assemble and give it a try.