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My 2006 Malibu LT steering wheel mounted audio controls are on the fritz. The volume up is mute, volume down is volume up, scan up doesn't work.....I think one is actually right. My husband thinks it's just a case of crossed wires but I went to an audio shop today and they said it's actually a circuit board in the steering wheel. Does anyone know anything about this? I'd greatly appreciate any help you can offer.
 

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The button press signals are multiplexed and thus there aren't individual wires to be crossed. If the shop's diagnostic is to replace the switch module (audio controls and trim on the steering wheel), I'd go with it. The little circuit board they are referring to is what the buttons are mounted on.
 
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