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.

    See also:

    How OnStar Service Works
    Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions. Push this red emergency button to get priority help from specially ...

    Language
    Press the customization button until LANGUAGE: ENGLISH appears in the display. To select your preference for display language, press the select button while LANGUAGE: ENGLISH is displayed on the ...

    Audio System(s)
    Determine which radio the vehicle has and read the following pages to become familiar with its features. WARNING: Taking your eyes off the road for extended periods could cause a crash resulting ...