December 13, 2004 - GM announced that it recently signed up its one millionth XM Satellite Radio subscriber.The first XM-equipped vehicles, Cadillac DeVilles and Sevilles, were produced in November 2001 and the one millionth XM-equipped GM vehicle rolled off the line in February 2004. Today, one out of three GM vehicles purchased are equipped with factory-installed XM Satellite Radio.

XM is available in the 48 contiguous United States only. Basic subscription required and sold separately.