For all of those with new GM vehicles that are still on the 3 month free trial period with XM. There's a "77.00 promotional deal" for 160 channels for 12 months. - Just call XM and ask for the deal. -- Watch and be sure to cancel or pick your new deal, just prior to the end of the 12 months, or they will automatically sign you up for a "standard package" at a much higher price. That's assuming that you used a credit card, initially. -- I just purchased a new 09 Silverado, and signed up for this deal a few days ago. -- As usual, there's additional fees and taxes. My total was $88.78. --