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:
Navigation
This display is used for the OnStar
or Navigation System Turn-by-Turn
guidance. See OnStar Overview or the navigation manual,
if the vehicle has navigation, for
more information. ...
Heated Steering Wheel
For vehicles with a heated steering
wheel, the button for this feature is
located on the climate control
system.
: Press to turn the heated
steering wheel on or off. A light on
the button ...
Headlamps
The exterior lamps
knob is located on your
instrument panel to
the left of the steering
wheel.
(Off): Turn the knob to
this symbol and
release it to turn off the Daytime Running Lamps
(DRL ...
