One thing I forgot to tell you that I have not installed navigation system, and have not used the navigation by OnStar.
once tried to purchase the navigation system but I was told that my car did not have to install the harness and if I want to be installing nevacion ke would have to buy all the harness that runs all vehicles would have to disassemble the entire interior to get the harness of the vehicle and put the new …..
but it would be better to have some adapters to adapt the navigation without having to change the harness …
