Yes I agree. Check the big sqaure wiring plug that goes into the T case.
Also check the wiring harness going into the tranny
Make sure everything is snug and clean.
First we need to do a diagnostics to see what symptoms you are having.
you said the truck is in 2wd (no 4x4 no 4x4L lights) and it wont move?
You put it in 4wd h and it still wont move?
Put it in 4lo and it drives?
I would suspect the shift motor is out of adjustment or needs to be cleaned.
The transmission shop should not have messed with the T case to rebuild your tranny, but if they did, its possible they jacked it up.
First check the fluid in the tranny and T case. The T case should be full of ATF.
Next unbolt the shift motor, You will then see the little 3 position switch on the T case that the motor turns, you can now manually turn it rom 2wd, to 4wd, to 4lo.
tie the motor up with some zip ties and drive around in 2wd, make sure everything works.
Stop and get under there, shift it into 4hi and repeat.
teh 4lo and repeat.
Does everyhting work? Does it still pop into N?
If everything works now rebuild your shift motor.
You can do a search for this, also look here:
therangerstation.com
Look under t cases
hope that helps.
Also the more info you give us the more we can help.
Start by listing the year/model (I assume it is your 93 xlt)
auto or stick, miles, etc etc....
then the EXACT problem that you are having with the touch drive system
Also the touch drive 4x4 system has a control box that has a self diagnostic proceedure, you can search for this to. It has a red LED light on it which can confirm the signal to the T case shift motore and also tothe dash mounted buttons