- Retains all safety warning chimes
- Provides 10-minute RAP accessory output
- Compatible with all audio system levels
- Amplifier turn-on output wire
The C2R-GM11 radio replacement interface is your solution to upgrade your factory radio with an aftermarket radio in select GM vehicles without OnStar. C2R-GM11 works with your vehicle's databus system to retain the factory warning chimes, Retained Accessory Power (RAP), and audible signal indicators.