Bluetooth-Navigation issue


New Member
Jul 22, 2016
I own a 2012 Buick Regal. I cannot connect any Bluetooth device (and I once could). The navigation direction indicator in the instrument cluster only displays two dashes. The phone buttons on the rear view mirror do not do anything, including OnStar.
Any advice?
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Last edited:
Check fuse/wiring for the mirror or the OnStar box. BT is handled by the OnStar ECU on many GM cars.

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