I recently installed a Garmin Nuvi that I won which works fine, but several days after the GPS installation my XM receiver no longer works. Does anyone know how to fix this - I suspect that the two devices may be interfering with each other.
The frequencies of GPS and XM/Sirius are pretty far from each other. But quite possibly something could be wrong with your GPS unit causing it to send out interference on the XM/Sirius band. When you unplug the GPS unit does the XM radio work again? What do you mean by not work? Searching for signal? No audio?