I don't think that OnStar noifies the Volt owner via text message or email when the Volt alarm is sounding, but I wanted to confirm this by asking others on this forum. It seems like this function could be implemented because I am notified by text message and email from OnStar when my Volt has finished charging and I get that email right after it finishes. It would be nice to know if the Volt alarm is sounding when you are not within earshot.
A related question. Is there any way to know if the Volt alarm was sounding off while you were away from the car, when you return to the car? One of my car alarms chirps several times when the alarm is disarmed by the fob if the alarm was activated (sounding off) after it was last armed.