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:
Hydraulic Clutch
For vehicles with a manual transmission, it is not necessary to regularly check brake/clutch fluid unless there is a leak suspected.
Adding fluid will not correct a leak.
A fluid loss in this system ...
DSP (Digital Signal Processing)
Settings
For vehicles with DSP, it is used to
provide a choice of different
listening experiences.
The DSP settings for the radio with
CD are:
• normal - Select this setting to
adjust the audio for ...
Heated Mirrors
The vehicle may have heated mirrors:
(Rear Window Defogger): Press to
heat the mirrors.
See “Rear Window Defogger” under Climate Control Systems for more information. ...
