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If you can't shift from park, it isn't the result of the transfer case. The system has a park interlock system which prevents the shifter from moving without the brakes on. First make sure the brake lights are working. If they are, we either have a problem with the interlock actuator or cable, but are under the console (left side for the cable/right side for the actuator). I attached a picture of both. Let me know if the brake lights are working and if I am correct in thinking the shifter will not move from park. As far as being in 4wd low, that should not prevent you from shifting.
Let me know.
Images (Click to enlarge)
Monday, June 24th, 2019 AT 8:02 PM