The problem is even if you use 4x4 high range it will go in low range and is hard to get out why
I had a similar issue. In my case, the cause was a faulty electronic 4x4 switch, that is, the small unit with the push-buttons in the dashboard you push to engage or disengage the four-wheel drive. Replacing the switch fixed the issue.
It could probably be many different things, so I can't say for sure that this will solve your specific issue. It's probably worth checking out, though.
I had a similar issue. In my case, the cause was a faulty electronic 4x4 switch, that is, the small unit with the push-buttons in the dashboard you push to engage or disengage the four-wheel drive. Replacing the switch fixed the issue.
It could probably be many different things, so I can't say for sure that this will solve your specific issue. It's probably worth checking out, though.
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SOURCE: 4 wd low range will sometimes engage 4wd high will never engage
I had a very similar problem with my 98 gmc 2500. The 4 low would engage - though the upshifts were erratic, but no 4 high though the light sometimes came on. I changed out the electric shift solenoid or whatever it is called, on the transfer case and it worked fine after that. A fairly simple fix that can be done in 15 minutes. Hope this helps.
SOURCE: 4x4 not shifting into high
hi how are you doing? just had same problem with by gmc i replaced the transfurcase motor and it works fine. the electric motor moves the shifter in your transfurcase from 4hi to 4lo and 2hi.there is only 3 things that operate your 4x4 the switch the motor and the control modgual.
SOURCE: 1994 gmc 4x4 non engaging high range four wheel
I would check to see if it is the Axle Actuator. On that model truck there is an upgrade available that is electrical upgrade. Instead of using a vacuum to engage the axle, it uses a small electric motor. The cost for this part isn't much more than the older vacuum model. Usually the electrical one runs around $100. This is a relatively easy change that most any person can do with just about any experience.
SOURCE: on my 1997 jimmy 4x4,will not shift into 4weal
is it electric push button
if so its a sensor on the transfer case an or one of the wheels.....
if its manuel then the main shaft is striped....
or its seezed under your jimmy an dont wanna shift
Testimonial: "thankyou for the info.will look at this first thing in the morning."
SOURCE: only 4x4 high won't work 94 jimmy
Thats a fairly common problem with that model. Typically it involves a 75.00 part called a transfer case actuator. I personally think the price is right if the vehicle is in good condition other than the actuator. Be advised the Jimmy's normally came with a 700R4 automatic transmission that were prone to failure. Very expensive to repair 2200 to 2600. Mine failed twice before I sold it. Hope this helps. Marvin
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