New to the forums so excuse me if this topic has been discussed (i've looked, haven't seen anything)

So my issue is that i just bought a Chevy with an XM stock radio in the car..I am a current Sirius subscriber (year subscription up in december) and want to switch my sirius subscription to the XM in my car so i don't have to go through the whole installation of the sirius radio and then switch when the sub is up.....i figured maybe this was possible since they are one company now...

Has anyone attemted to do this and been successful (or not)?

Thanks in advance..