I have an 06, and I thought for the longest time it had XM, well it doesn't.. I wanted to get it turned on and its not even on my radio, I have a 6 disc changer but no XM.. Is is something that I can just swap it out with a stock Radio with XM? Or is it going to be a crazy amount of work to do....

 

i thought theres a sat module and im sure it has another antenna.

 

My truck has a shark antenna on top, which I assume is for onstar. Right next to it is a little flat disc antenna that says Sirius.

Just thought that might be some useful info if you want to take a peek on top of your ride.

 

I just bought an 06 with nav/monsoon and I thought I had sat radio too, but it did not. I brought it to a Hummer dealer and they had a guy that does just accessories for them and he added Sirius radio and an IPod connector that goes directly into the unit. He used the On-star shark fin, but ordered the Hummer sat radio antenna that uses the same shark fin. Now the whole unit looks factory with as many factory pieces as possible, but also has the IPOD hookup. Its great. I am sure they can do the same thing to the 6disc radios...