Sirius XM Tuners do not come with all receivers and need to be purchased separately.
If you have a tuner installed and change the Sirius channel to 0, the display will show you the Sirius Radio ID number.
If no tuner is installed, then you will see a ‘Check Tuner’ message.
If you see a ‘Check Antenna’ message, please confirm that the antenna is plugged into the Sirius Tuner and that the antenna has a clear view of the sky.