See also:

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 o ...

Warning Lights, Gauges, and Indicators
WARNING lights and gauges can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to the warning lights and gauges co ...

SERVICE ALL WHEEL DRIVE
This message displays if a problem occurs with the All-Wheel Drive (AWD) system. The vehicle will run in 2WD. This could be caused by: - An electronics problem - An AWD system oil overheat - ...