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:
Setting the Tone (Bass/Midrange/Treble)
BASS/MID/TREB (Bass, Midrange, or Treble):
To adjust bass, midrange, or treble:
1. Press until the tone control tabs display.
2. Continue pressing to highlight the tab, or press the softkey under ...
Fuels in Foreign Countries
Never use leaded gasoline or any other fuel not recommended in the previous text on fuel. Costly repairs caused by use of improper fuel would not be covered by the vehicle warranty.
To check the fuel ...
Driver Information Center (DIC) (Without DIC Buttons)
If your vehicle does not have DIC buttons, the information below explains the operation of this system.
The DIC has different displays which can be accessed by pressing the trip odometer reset stem l ...