GM ONSTAR WITH BOSE INTERFACE
Retains the function of OnStar© and Bose amplified audio system when the factory radio is replaced. Generates all safety warning chimes. Retains OnStar© when the factory radio is replaced and all safety warning chimes. Retains Bose amplified audio system and maintains a "healthy" status on the Class II databus. Plug-in installation for vehicles with 21-pin harness.
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