I seem to to recall a similar post a while back about On-Star doing things that just aren't kosher. The simple answer is that although the On-Star hardware is capable of doing this, the software doesn't allow it. There is simply too much liability involved. On-Star doesn't "phone home" regardless of whether or not you are a subscriber unless the airbags deploy or, in some configurations, a "near deployment" event occurs.
Roger
I have on-star on my '01 Montana but am not subscribing to the monthly
> service (any of them). A buddy of mine said that even though I don't
> subscribe to any of its services, it "phones home" each night with data on
> location, miles driven, etc. This sounded like an urban myth but he insisted
> that this was true. Anyone know for sure if on-star uploading data to "home"
> even when I'm not paying for the subscription. If this is true, how does one
> "opt out"?
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