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  1. #1
    Newbie
    Join Date
    May 2009
    Location
    The Great Pacific Northwest
    Posts
    6

    Default Got another easy one for you

    Every time I get into our 2009 Silverado HD, we hear this whining behind the radio/Nav system, like a gyroscope or an automatic leveling thingy, trying to or is doing something. I just cannot figure out what is actually going on. Can anyone explain?

  2. #2
    Sr. Apprentice
    Join Date
    May 2009
    Location
    Calgary, Alberta, Canada
    Posts
    47

    Default

    With my 07' I often hear the fan running to cool the Audio package. I have the CD,DVD,Sat Radio, mac daddy Bose setup in my truck

    While the truck is running it is too faint to hear, but when I shut the truck off I can hear the fan running.
    Maybe your fan is shot? A little noisy?

    Hope this helps!
    Mark
    07 NBS Silverado
    Crew Cab LTZ
    Vortec Max

  3. #3
    Newbie
    Join Date
    May 2009
    Location
    The Great Pacific Northwest
    Posts
    6

    Default

    Nope, I think I got an answer, it is the navigation system getting GPS Satellite info, then accessing the database on the disc. Complements of Chevrolet. Thanks ya all.

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