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:
Control Buttons
The buttons used to control the CD/DVD player are:
MEM/DVD/AUX: Press to choose
between the MEM, CD/DVD,
and AUX.
: Press to select tracks or
to fast forward or rewind within a
track.
INFO: ...
Starter Switch Check
WARNING
When you are doing this inspection, the vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before starting this check, be sure there is enough room aro ...
BRAKE FLUID LOW
This message is displayed when the
brake fluid level is low. See Brake
Fluid. ...
