Automatic Headlamp System
When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically.

There is a light sensor located on top of the instrument panel. Do not cover the sensor. Otherwise the headlamps will come on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
When it is bright enough outside, the headlamps will turn off or may change to daytime running lamps (DRL).
The automatic headlamp system turns off when the exterior lamp control is turned to
or the ignition is off.
See also:
Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if ...
PhatNoise a segment first
Also available is the first-in-segment Mobile Digital Media Powered by
PhatNoise system. PhatNoise is a wallet-sized, 40-gigabyte hard drive that
installs in the Terraza's overhead rail system. Th ...
Call Waiting
Call waiting must be supported on the Bluetooth phone and enabled by the wireless service carrier.
► Press
to answer an incoming call when another call is active. The original call is place ...
