Car Audio Question
 

I have C6Z and was thinking of switching out the head unit. I have XM now. Will I have to call XM to notify them of the head unit swap to keep it active? Thanks!

Yes - every XM/Sirius radio unit comes with a unique ID - you call up XM, tell them you got a new radio, give them that new ID, and they will do all the rest. Just make sure you have your old ID from the old radio cause they will ask, to help confirm its you...