Under the terms of agreement reached in 2006 between XM Satellite radio and General Motors, all GM cars received factory installed XM radios. In July 2008, Sirius, at the time XM’s rival, merged with XM. Under the merger, the satellite radio companies maintain their services, but now offer each other’s channels on a personal subscription plan. However, if you have an XM radio in your GM car, you can convert it to Sirius.
Things You’ll Need : Sirius radio: “Starmate 5, Sportster 5 and Status 6.”, SIR-GM2L, New Sirius Radio (installment kit), 12-digit ID code, Subscription to Sirius.