not sure now it is on the 21+ but on my 18 it has onstar nav only, I can add a module and have factory nav without onstar. just depended on the option that was added or not when it was built. The retrofit if I did it myself would run me about $600 or so.Hi,
Will you still able to use the navigation system without the Onstar?
like the poster above, I use android auto or a real GPS both have voice command and factory nav is pretty much useless to me as well.