Hey!
Yep I believe all you have to do is call Sirius with whom you have the service and give them the Radio or XM number or whatever off of your Genesis. They'll just update that info on your account and Voila! You should be good to go.
Check in your Genesis radio/audio settings and look for your radio code or whatever it's called.
Good luck!
2010 Hyundai Genesis Coupe 380GT
M&S Type A Front Grill
KDM 380GT Emblem
Korean Custom Wing Badge Emblem
Injen Cold Air Intake
SuperLux LED Tail Lights
O.Z. Ultraleggera 18x8F/18x9R
E&G Classics Full Aero Kit