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:
What to Use
To determine what kind of fluid to
use, see Recommended Fluids and
Lubricants. Always
use the proper fluid. ...
General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts
and GM-trained and supported service people.
Genuine GM parts have one of these marks:
...
Passive Entry
This allows the Passive Entry
feature to be turned on or off.
Press SELECT when Passive Entry
is highlighted. Turn the Menu knob
to select On or Off. Press SELECT
to confirm the selection. Pr ...
