Just so everyone knows, I just read the XM Guardian Privacy Policy. Even if your subscription ends, they still transmit data (including location data) from your vehicle to FCA periodically. They expressly state that "Cancellation of SiriusXM Guardian Services alone does not stop the transmission of Transmitted Vehicle Data from your vehicle." It then instructs you to call 844-796-4827 and "ask to cancel for privacy reasons. This request will result in the deactivation of your wireless transmission network service and will cease your access to SiriusXM Guardian safety and convenience services and certain other Uconnect or Alfa Connect services. This will also prevent updates to the In-vehicle Manual and the implementation of any Wi-Fi Services through the vehicle." They specify again that "cancelling your SiriusXM Guardian subscription without the request to deactivate for privacy reasons will not cancel the transmission of Transmitted Vehicle Data to FCA or Alfa Romeo."
The first rep I spoke to didn't know what I was talking about and kept me on hold for about 15 minutes before I was disconnected. When I called back, the next rep told me that because my service was already canceled, they weren't collecting any information. Then I told him that wasn't true and that data is still sent to FCA. Then I read the policy to him and he said something like, "oh yeah, thank you for explaining that to me. I have deactivated you, unlinked your account, and wiped all of your data. You will need to re-enroll if you ever want to sign up again".
I just wanted to share in case anyone else would like to maintain their privacy post-subscription.
Chris