In a Nissan pickup, this is the factory satellite ready head unit and under
dash Sirius module. In the SAT mode, display shows 'ACQUIRING' with a pop in
the audio about every 15 seconds. Worked fine up till last saturday night.
It's not a signal issue, that would display 'NO SIGNAL' and it's not an
antenna issue, that would display 'ANTENNA'.

Anyone have information regarding troubleshooting/repairing these things?

Mike