You might be surprised. I have a 2017 chevy and it definitely does report data back to GM. I have a close friend that works there and was able to confirm this. I thought there was no way since it was old, and it has no internet access of any kind that I can see. But it uses the cell network to report back data. I suspect it reports alot less interesting data than new cars. But for sure, it is sending data back to GM over the cell network.