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 ...

Exterior Lamp Controls
Exterior Lamp Controls The exterior lamp control is located on the instrument panel on the outboard side of the steering wheel. Turn the control to the following positions: (Off): Turns of ...

Security Light
This light will come on briefly when you turn the key toward START. The light will stay on until the engine starts. If the light flashes, the Passlock® system has entered a tamper mode. If t ...