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:
Engine Cooling when Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine Overheating. ...
Accessory Inflator
Your vehicle has an accessory inflator system. It
can also inflate things like basketballs and
bicycle tires. It can also used to inflate the tires to
the proper tire pressure. It is not designed t ...
Instrument Panel Overview
A. Air Vents .
B. Headlamp High/Low-Beam Changer.
Turn and Lane-Change Lever. See Turn and Lane-Change Signals . Driver Information
Center (DIC) Buttons. See Driver Information Center (DIC) .
...
