Onstar Interface

OnStar equipped vehicles uses the radio amplifier and speaker system for voice communication from the OnStar operator to the vehicle. Voice communication from the vehicle to the OnStar operator is through the OnStar microphone and module which is not a part of the radio system.

The radio system and OnStar system are connected through the 12-way connector at the back of the radio.




The circuits contained in the 12-way connector are:

Disconnection of the 12-way connector at the radio isolates the radio system from the OnStar system. Voice communication from the vehicle to the OnStar operator is possible. However, the vehicle occupant will not be able to hear the OnStar operator. The Onstar call is "incomplete," and effectively non-functional.

For information regarding radio operation problems refer to "Symptom Chart Guide" procedure. For further information on OnStar operation, refer to "OnStar" section. A Symptom Chart Guide