Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Voice Pass-Thru
Voice pass&-thru allows access to the voice recognition commands on the cell
phone. See your cell phone manufacturer's user guide to see if the cell phone supports
this feature.
To access ...
Infotainment System Menus
Tone Settings
To access the tone settings, press the Home Page Tone button or the TONE button
on the faceplate. Use the tone settings to adjust the following features:
○ Setting the tone
...
Automatic Dimming Mirror
If the vehicle has the automatic dimming mirror, the driver outside mirror automatically adjusts for the glare of the headlamps from behind.
This feature is controlled by the on and off setting on th ...





