Switchting from miles to km/h?

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Onstar does not monitor your vehicle except furing certain conditions.
One, you push one of the buttons.
Two, your VCIM (onstar module) sends out car information that it is programmed to send to onstar, with your permission, once a month.
Three, the VCIM detects air bag deployment, then they call, and if if no answer will send emergency crew, if you answer, they will send emergency crew if you request it.
Four, a police agency calls onstar and gives them a correct ID, and then onstar will locate the vehicle and rely information to the police agency.