1996 Ford F-250 4+4 only shifts from 1 to 2

What is your question?

It got stuck and I think it might have got hot trying to get it out of the mud,someone told me it's a module in the transmission???? Is there a way to figure out this problem without dumping a lot of money on different things that it might be?????

What makes this problem better or worse?

Nothing

How long has your 1996 Ford F-250 had this problem?

Week