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 ...