iOS 18.1.1 has stopped my Bluetooth connection to my Blazer

After updating my phone this weekend to the 18.1.1 update, my phone no longer connects via Bluetooth to my Chevy Blazer. Carplay will still connect, but the phone itself will not connect and allow calls/texts to come through, even if plugged into a cable via the USB port either. I've deleted the phone from the car and the car from the phone about 8 times at this point, and it'll never connect for more than about 5 seconds before disconnecting and making me repeat the process. I need this resolved sooner than later.