Receiving a Call
When an incoming call is received, the audio system mutes and a ring tone is heard in the vehicle.
- Press 
to answer the call.
- Press 
to ignore a call.
See also:
SERVICE BRAKE ASSIST
This message displays if there is a
problem with the brake system.
The brake system warning light and
the antilock brake system (ABS)
warning light may also display on
the instrument panel cl ...
Battery Voltage
This display shows the current
battery voltage. The vehicle's
charging system regulates voltage
based on the state of the battery.
The battery voltage may fluctuate
when viewing this informat ...
OnStar Additional Information
Transferring Service
Push to request account transfer eligibility information. The Advisor can
assist in canceling or removing account information. If OnStar receives
information that vehicle own ...