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:
Headlamp High/Low-Beam Changer
(Headlamp High/Low Beam Changer):
To change the headlamps from low to high beam, push the lever toward the instrument
panel. To return to low-beam headlamps, pull the multifunction lever toward y ...
When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A Driver Information Center (DIC)
tire pressure message may also
display. See Tire Messages. Stop as soon as
po ...
New Vehicle Break-In
Notice: The vehicle does not need an elaborate break-in. But it will perform
better in the long run if you follow these guidelines:
Keep the vehicle speed at 88 km/h (55 mph) or less for the fir ...