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 ...

Auxiliary Devices (Radio with CD/DVD and MEM)
The optional AUX input allows portable devices to be connected using the 3.5mm (1/8 in) input jack or the USB port. Portable devices are controlled by using the menu system described in Operation ...

StabiliTrak® OFF Light
This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then goes off. Press and r ...