Quoted from David All Trac

NO. Don’t forget that:

The manual Trans have a LOCK button and the autos Trans have an AUTO button. Both make almost the same job but the LOCK button literally locks the t-case will the AUTO button lock the t-case when it needs it. It writes something like this in the owner's manual.

Quoted from David All Trac

Very interesting.  I'll have to check my owner's manual as well. Based on what I just read, it seems that in manual transmission All-Tracs, the center differential LOCK button does something different than what it does on
the automatic transmission AUTO button.   Is this what you were trying to tell us, David?

Très intéressant. Je vais devoir consulter mon manuel du propriétaire. Sur la base de ce que je viens de lire, il semble que dans la boîte manuelle , le bouton de blocage central du différentiel fait quelque chose de différent de ce qu'il fait sur
la transmission automatique touche AUTO. Est-ce que vous tentiez de nous dire, David?

Please correct my French.  I had to use a dictionary to write this.

Ton français est très bon !

This is what I want to tell you since... the begining !