Not as many people read the other boards so I am posting this here too.
Does anyone know if sirius can be replaced with XM easily at all? My 04 came with sirius set up and antenna and they recently changed their channel lineup and deleted my two favorite channels. Not only that but XM is now commercial free! and is cheaper and has better stations.
Thanks.

2004 6MT Coupe Graphite/Graphite / Performance / Premium / Sirius / Navigation / Clear Bra / Aero / Trunk Mat

 

you probably have a contract with sirius and cancelling it could be $$$. i think the atenna is easy to swap out but im no expert. the system should be able to get registered with XM. my suggestion ask your dealer.