See also:

Cleaning the Display
Notice: Using abrasive cleaners when cleaning glass surfaces could scratch the glass. Use only a soft cloth and do not spray cleaner directly on the system as it could affect the mechanical ...

Horn
Press near or on the horn symbols on the steering wheel pad to sound the horn. ...

Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard. If the light next to the OnStar buttons is red, the system may not be functioning properly. Push and request a vehicle diagnos ...