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:
Languages
The vehicle can be programmed to
respond in French or Spanish. Push
and ask an Advisor. Advisors
can speak French or Spanish. ...
DIC Operation and Displays
The DIC has different displays which can be accessed
by pressing the DIC buttons located on the instrument
panel, to the left of the instrument panel cluster. ...
Cleaning the Video Screen
Pour some isopropyl or rubbing alcohol on a clean
cloth and gently wipe the video screen. Do not
spray directly onto the screen and do not press too
hard or too long on the video screen. ...
