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:
Roadside Assistance Program
For U.S. purchased vehicles, call 1-800-252-1112;
(Text Telephone (TTY): 1-888-889-2438).
For Canadian purchased vehicles, call 1-800-268-6800.
Service is available 24 hours a day, 365 days a year ...
Programming without a Recognized Transmitter (Keyless Access Vehicles Only)
If there are no currently recognized transmitters available, follow this procedure
to program up to five transmitters. This feature is not available in Canada. This
procedure will take approximate ...
Power Door Locks
Power Door Locks
(Unlock): Press to unlock all
doors.
(Lock): Press to lock all doors.
See “Power Door Locks” in Vehicle
Personalization. ...
