Circuit/System Description
WARNING: This page is about a different car, the 2012 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Without Navigation Radio
The mobile telephone control module uses the cellular telephone microphone to allow driver communication with cellular telephone.
With Navigation Radio
The mobile telephone control module and navigation radio use the cellular telephone microphone to allow driver communication with a cellular telephone, as well as to operate the voice recognition guidance feature of the navigation radio.