If the switch is new and not responding and you made sure there is power to and from the fuses, the next thing to check would be a circuit ground.
There are several grounds spliced together from the shift module. Check to see if there is continuity to ground at those wires.
Here is a link you may find helpful:
I attached the wiring schematic below for the 4wd circuit. I had to cut the pic in half to make it readable for you. I did overlap them so you can follow from one to the next.
Let me know what you find or if you have other questions.
See pics below.
Images (Click to enlarge)
Saturday, March 26th, 2022 AT 7:21 PM