Service All-Wheel Drive Light

This light should come on briefly when you turn on the ignition, as a check to show you it is working.
The service all-wheel drive light comes on to indicate that there may be a problem with the drive system and service is required. Malfunctions can be indicated by the system before any problem is apparent, which may prevent serious damage to the vehicle. This system is also designed to assist your GM dealer in correctly diagnosing a malfunction.
See also:
Ignition Positions (Keyless Access)
The vehicle has an electronic keyless ignition with pushbutton start.
Pressing the button cycles it through three modes: ACC/ACCESSORY, ON/RUN/START,
and Stopping the Engine/OFF.
The transmitter ...
XM Radio Messages
If you have a Radio with CD or Radio with Six-Disc CD, you can receive these
radio display messages.
If you have a Radio with CD (MP3), you can receive these radio display
messages.
...
QuietTuned for silent ride, comfort
Like all other Buick models, Terraza benefits from QuietTuning, a
comprehensive engineering program throughout the entire vehicle to ensure a
silent ride. This includes new engine isolation measur ...
