I have the GEX-P10XMT unit and finally got my XM radio working tonight with my AVIC-D1 but while I was driving around I didn't notice traffic flow on the maps or anything that would indicate to me that the XM NavTraffic is working correctly. When I'm listening to the radio and look at the "XM Status" screen it says not connected and no signal. I'm confused. Everything is hooked up right so I think.

I attached the antenna, power (minus the red lead), and the IP-BUS cable. Am I supposed to attach the data cable too or something? I don't get it. Any help woud be great.

You absolutely have to attach the data cable if you want NavTraffic. The IP Bus is just for audio.

Thanks a lot!