If it is Sirius XM, it should allow one free channel where they advertise $30 for 6 months to new subscribers. (Normal rate $14.95/mo) I think if you have your VIN and radio will also display a serial number, you can call and they will walk you through process to activate. Dealers usually offer you 3 months free. XM radio usually wants auto draft renewal, but if you call them, you can also negotiaye a lower price or adjust your plan.
I dont know how much it can be but if you take it to the dealer they can help you
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