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:
Mixed-Band Presets
Each page can store six preset
stations. The presets within a page
can be from different radio bands.
To scroll through the pages, press
the FAV button located on the
faceplate or the FAV scr ...
Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer. ...
Shifting out of Park
Automatic Transmission
Shift Lock
The vehicle has an automatic
transmission shift lock control
system. The shift lock control
system is designed to:
• Prevent ignition key removal
unless ...
