I bought a used Chevy bolt EV, for now I’ve pulled the onstar system fuse which kills the telemetry and GPS+cell antenna. No tracking with no power, it’s my car and my battery so I decide what gets my power.
I’m not interested in letting any of these companies screw me over behind my back regardless of who is “less evil,” but I’ve gotten so used to the convenience of EVs that I won’t do without one.
I use my phone for navigation and music/podcasts and that still works just fine.
Might at some point look at a more sophisticated way of doing this like removing just the onstar module or terminating its antenna, but for now it’s fine.
Your assumption about how datalogging works is incorrect.
In short, sensors almost never store local data which doesn’t even matter if those sensors are depowered. There is absolutely nothing to be afraid of here.
So yeah, sensors do not locally store data except in very rare and high-cost cases not found in basically any consumer electronics. There needs to be a datalogger or handoff to a datalogger of some variety. While the ECU or MCU of a vehicle logs data, there’s not a permanent memory of every action you’ve done with the car because it literally doesn’t have enough memory. Doubly so if some of the sensors such as GPS are physically unplugged or depowered as in my case.
So, no amount of malicious action from a dealer would extract location or even more basic data from a car. The only thing they’d see are the basics of the ECU or MCU which has been common for every car produced since OBD2 became… a thing.
I’ll also add that an easy solution to this is not to go to a corporate dealer (all Chevy dealers are shit anyway to be fair). While the independent mechanic might have to buy proprietary diagnostics from the manufacturer, they aren’t going to re-enable systems like GPS or telemetry if you tell them not to because they care about you coming back and thus have an incentive not to fuck you over.