If you are an existing OnStar subscriber, or are looking to become one in the future, your privacy may be at risk. An article posted by Jonathan Zdziarski discusses the changes to OnStar’s Privacy Statement, and includes OnStar’s plans to share your information with third-parties, regardless if you are paying for the service. Yes, even if you aren’t a paying customer, OnStar may continue harvesting data from your car and share it with others.

What data does OnStar leave on the table to share? How about your GPS history, vehicle speed or safety belt usage? Although the GPS data is anonymized, if your vehicle is parked in your driveway for 75% of its life, it doesn’t take an expert to determine what physical address it’s linked to.

What’s even more concerning is that your data can be collected and shared, even if you aren’t a paying customer. You must request that your data connection is shutdown to opt out of the collection process. Unfortunately, it appears this process is less than perfect. From Jonathan’s post:

To make matters even more insulting, it was difficult to ensure the data connection was shut down after canceling. I still have no guarantee OnStar did what they were supposed to. I had to request the data connection be shut down repeatedly, after the OnStar rep attempted to leave it on and ignore my requests.

One commenter on the post recommended pulling the fuse to OnStar. For those vehicles without a dedicated fuse:

If you don’t have a dedicated fuse for the On Star radio (ours was 5A and clearly labeled) there are usually guides online for major models that outline where the antenna connection is made to the system. If you are an intrepid owner or have a shop/friend you trust you can disconnect the On Star system from the antenna mast and disable the GPS.

The thought of having to physically disconnect an antenna to ensure OnStar isn’t violating my privacy is outrageous.