The XM radio doesnt use data. You dont need a sim card at all for that. You need the sim for internet radio, like spotify or deezer, traffic and a few other things I am not remembering. I dont know anything about Red Rocket, but I would make sure that account is paid up and should be working before troubleshooting the car. It has been a few years since I looked at the settings, but I am pretty sure those manual boxes only show when you move the slider switch from auto to the other option. Based on my experience, be very gentle with the sim card reader.