Brand new recieved it today and intalled it today works great but I tried to change my tire size and it says vin locked I try to go to stock and it says vin locked what is wrong it is a new never opened unit ,I put it in my 2006 Dodge and no other truck so what gives please help me . I did buy from a authorized dealer Thoroughbred Diesel.

 

Problem solved Bog Wagner took care of it for me .
Thank you much Mr Bob

 

What was the problem?

 

It was vin locked.