XM™ Satellite Radio Service

XM Satellite Radio Service gives digital radio reception from coast to coast in the 48 contiguous United States, and in Canada. Just as with FM, tall buildings or hills can interfere with satellite radio signals, causing the sound to fade in and out. In addition, traveling or standing under heavy foliage, bridges, garages, or tunnels may cause loss of the XM signal for a period of time.

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    This allows selection of which of the doors will automatically unlock when the vehicle is shifted into P (Park). Press the MENU/SELECT knob when Auto Door Unlock is highlighted. Turn the knob to ...

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    OnStar®
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