When it is dark enough outside and the exterior lamp control is in the automatic position, the headlamps come on automatically.

The vehicle has a light sensor on top of the instrument panel. Make sure it is not covered, or the headlamps will be on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
Lights On with Wipers
If the windshield wipers are activated in daylight with the engine on, and the exterior lamp control is in AUTO, the headlamps, parking lamps, and other exterior lamps come on. The transition time for the lamps coming on varies based on wiper speed. When the wipers are not operating, these lamps turn off.
Move the exterior lamp control to
or
to disable this feature.
Daytime Running Lamps (DRL)
Hazard Warning FlashersOnStar® Destination Download
The destination download lets an OnStar® subscriber ask an OnStar Advisor to
download a destination to the navigation system. OnStar will send address information
and location coordinates of the destination into the navigation system.
Using Destination Download
If the navigation radio screen i ...
Bluetooth (Voice Recognition)
Using Voice Recognition
To use voice recognition, press the
button located on the steering wheel.
Use the commands below for the various voice features. For additional information,
say “Help” while you are in a voice recognition menu.
Pairing
A Bluetooth-enabled cell phone must be paired to ...
Installation Procedure
Align the body side outer panel reinforcement.
Clean and prepare the attaching surfaces for welding.
Position the body side outer panel
reinforcement on the vehicle.
Verify the fit of the body side outer panel reinforcement.
Clamp the body side outer panel reinforcement ...