Automatic Headlamp System
When it is dark enough outside and the exterior lamps control is in the automatic position, the headlamps come on automatically. See Exterior Lamp Controls .
The vehicle has a light sensor located 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.
See also:
Compressed Audio
The radio also plays discs that contain both
uncompressed CD audio (.CDA files) and MP3 files.
By default the radio reads only the uncompressed audio
and ignore the MP3 files. Pressing the CAT bu ...
Finding a Category (CAT) Station
(XM™ Satellite Radio Service Only)
CAT (Category): The radio may have the CAT button
feature. To select and find a desired category:
1. Press the BAND button until the XM frequency
displays. Press the CAT button to display the
c ...
Potential Issues
Some OnStar services are disabled
after five days. OnStar cannot
perform Remote Door Unlock or
Stolen Vehicle Assistance after the
vehicle has been off continuously
for five days. After five ...