I need some help. I have a 2009 ZR1. The car is a US model. I need to change the Region Code of the car and I would like to deactivate Onstar.
I have found someone with a Tech2 and I have also a card with the GM NAO version 33.004 ...
So we tried to change these settings but even after an hour of research I cant find to correct menu tree where I can change this settings. I found them in a menu from the Navigation system but Im not able to change them there. I can select one with a start but not more ...
Did anyone know where to find the exact menu point to change this settings and or how to do it exactly ?
Thank you very much.