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:
Torque Lock
If you are parking on a hill and you do not shift your
transmission into PARK (P) properly, the weight of
the vehicle may put too much force on the parking
pawl in the transmission. You may find it ...
Remote Recall
When on, this feature will recall the
current driver's last seat and outside
mirror positions upon unlocking the
driver door with the RKE, and
opening that door. The current driver
is identi ...
Blizzard Conditions
Being stuck in snow can be a serious situation. Stay with the vehicle unless
there is help nearby.
If possible, use the Roadside Assistance Program . To get help and keep everyone
in the vehicle ...
