“Installed a rp5-gm31 on 2009 Silverado with Bose. Why can’t callers hear me?sony xav-av3200(UC)”

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• The RP5-GM31 does not use the factory OnStar mic for anything other than OnStar. You would need to use the microphone included with the new radio for BT calling and any radio controlled, voice activated features.

  Answered by AAMP Global 3 years ago

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• Make sure you have the microphone for that specific radio this module has does not provide or adds Bluetooth calling

  Answered by Anonymous 3 years ago

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