See also:

Voltmeter Gauge
This gauge indicates the battery voltage when the ignition is turned on. When the ignition is on, this gauge indicates the battery voltage. When the engine is running, this gauge shows the conditi ...

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

StabiliTrak® Indicator 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 goes off. If it stays on, or ...