Are there any ALDeer members that are mechanics? Specifically, familiar with late 90's/early 00's F150's....

I have a 1998 F150 4x4 with the electronic dash knob 4x4.

My 4wd quit working a while back. It just got to the point where you'd turn the knob from 2hi to 4hi and nothing would happen. It simply would not engage. I did a lot of research and found a common problem where the electric motor on the back of the transfer case that turns the output shaft from the 2hi to 4hi/4lo positions would often go bad and had to be replaced.

No problem, I replaced it. 20 minute job. problem is it's still not working. turn the knob from 2hi to 4hi.......nothing.

I've found 2 fuses, 1 under the dash and 1 under the hood, that are associated with the transfer case shifting process and both are fine.

at this point, I don't even know what else to check.