So, tried that .. didn't work but ..

It is really cold here so I decided to take it for a local warm up drive around to see how many roads were clear ( not many , lol ) ..

1st thing, after a fair amount of driving the temp gauge looked like it was getting hot ?? it was blowing cold so .. I turned around and revved the engine couple times .. something then opened up and instant heat ?

well that's odd ?

I put it in neutral tried 4x4 again .. nope ..

drove a little more, stopped , put it in neutral again .. nope , backed up about 100 ft .. tried it, instant light lit and is the 4x4 working in auto ? Kinda seems like it but , I haven't owned a 4x4 pickup since 1998

lived south for all those years and when I came back 2 AWD cars .. when I tried a u turn , it did fight , like it was in 4x4 .. but, slick road , step on it .. it for sure spun rear tire but, it does get moving like front assist

so I will see tomorrow what happens