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:
Door Ajar Messages
DRIVER DOOR OPEN
This message may display when the driver door is open. Close the door completely.
HOOD OPEN
This message will display when the hood is open. Close the hood completely.
LEFT REAR D ...
California Fuel Requirements
If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this ...
Unlock Doors
Press the customization button until UNLOCK
DOORS: IN PARK appears in the display.
To select your preference for automatic unlocking,
press the select button while UNLOCK DOORS:
IN PARK is dis ...
