In addition to your gas and brake pedal habits, OnStar could collect and sell other data, like your seatbelt habits, or what station you're listening to on your factory-installed XM radio.

this site shows you how to jack in to the gps receiver inside any gm onstar system. it’s as simple as soldering a up a serial cable. you can then connect to it and either run some gps ...

GM and OnStar "will be banned for five years from ... In addition to location data, the GM/FTC settlement covers "radio listening data regarding specific content, channel, or station; hard braking ...