That's really the problem...just like feds wanting backdoors that "only they" can access, Onstar thought it was clever and could grant itself powers in software

That's really the problem...just like feds wanting backdoors that "only they" can access, Onstar thought it was clever and could grant itself powers in software that no one would be able to exploit. Too bad the people who are best at exploiting software aren't likely to work for companies like Onstar (I'm not saying Onstar is disreputable, just probably boring and with a low skill ceiling).