| Note |
Description |
| 1 |
These vehicles have a premium Bose® amplifier that only accepts 2 channel audio inputs. The aftermarket radio will not fade, however it will still continue to balance. OnStar® volume can be controlled via the steering wheel audio controls. The CM1 chime module is not required when using the Bose® amplifier. If you are not utilizing the Bose® amplifier, then the OS-2 and CM1 interfaces are required. |
| 2 |
Only use if the Bose® amplifier is eliminated. The C2R-GM24 will retain the warning chimes and provide a +12 volt accessory output. |
| 3 |
This interface does not replace the factory amplifier. The factory amplifier must be retained and working in order for the C2A-GM24 to work properly. |
| 4 |
Just like factory stereo system, the warning chimes will play through front left RCA output of interface. Turning on rear entertainment controls (if equipped) will make rear outputs of interface play second audio source. |
| 5 |
If the vehicle has a 6 Disc Indash CD changer and not an external CD changer, then the vehicle must have a factory external XM receiver installed for the AAI-GM12 to work. |
| 6 |
Only for 2004 and newer vehicles. |
| 7 |
Without XM receiver installed. |
