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:
Drive Systems
All-Wheel Drive
Vehicles with this feature always send engine power to all four wheels. It
is fully automatic, and adjusts itself as needed for road conditions.
When using a compact spare tire ...
Battery Voltage
This display shows the current
battery voltage. The vehicle's
charging system regulates voltage
based on the state of the battery.
The battery voltage may fluctuate
when viewing this informat ...
Additional Maintenance and Care
Your vehicle is an important investment and caring for it properly may help
to avoid future costly repairs. To maintain vehicle performance, additional
maintenance services may be required. It is re ...