It sounds like your transfer case is in 4wd all the time. Is the light on? If not I would check the transfer case actuator to see if it works. Here is a diagram below to help.
This shows you the actuator and the parts of the transfer case.
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Cheers, Ken
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Saturday, October 20th, 2018 AT 11:06 AM