CM1

CM1 chime module for use with the OS-2 or OS-2Bose interfaces only. The CM1 retains the warning chimes when you replace the factory radio that have the warning chimes built into it. Keeps seat belt, low fuel, parking brake, memory seats, security, low brake fluid and other chimes. Note: The CM1 will not work by itself. It is proprietary and only works with the OS-2 or OS-2BOSE. If you need to retain warning chimes and the vehicle does not hav Bose or OnStar, use the C2R-GM24.