Try a battery disconnect reset. Remove the neg terminal, then depress the brake pedal for a minute, then reconnect. If this does not work, if the fuses are all good, and you can not hear any noises below when moving the switch, I think you have a bad TCCM. That would be transfer case control module.
This is located under the dash behind/beside the hood latch handle. You can find them in boneyards for less than $100, and I think a new one is closer to $400.