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 Air Cleaner/Filter
Engine Air Cleaner/Filter ...
Symbols
The navigation system may have a
feature that lets the driver view
symbols on the navigation screen
while using the RVC. The Ultrasonic
Rear Park Assist (URPA) system
must not be disabled to ...
Control Buttons
The buttons used to control the
MEM player are:
MEM/DVD/AUX: Press to select
the MEM player.
or
: Press to select tracks or
to rewind or fast forward within a
track.
INFO: Press to displ ...
