I had the factory XM module installed and it's working great. I did not need to take it to the dealer for programming. The PCM2 saw the XM immediately.

As a side effect, I do not have trip info on the PCM display. It doesn't count miles anymore.

Does anyone know why?

By the way, I also have a Tooki installed, but I had theat installed before the XM and that did not affect the trip computer.