Whichever comes first. See retailer for limited warranty details.
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Call 1-888-4-ONSTAR (1-888-466-7827) or visit onstar.com for details and system limitations.
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XM Radio requires a subscription, sold separately by XM after the first 90 days. XM Radio U.S. service only available in the 48 contiguous United States and the District of Columbia. For more information, visit gm.xmradio.com.