Thanks for the info. I have the same noise. 3 month old bolt, 3000 miles. Judging from your name you may live in Berkeley Calif? If so, that's odd as I also live there. Wonder if Berkeley's rough streets and hills might be part of the problem.
But , above all, did the dealer work...
Warning. Luddite alert. I even carry a paper map most places I go.
that said:
To revive an old thread again. For those who may still be looking into disabling all or some of Onstar.
I believe the image in the previous post is the radio, not the OnStar.
I think the OnStar is behind the...