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:
Heated and Ventilated Seats
On vehicles with heated and ventilated seats, the
ignition must be on to use the feature.
Driver’s Side Buttons shown
The buttons are located on
the front doors.
(Heated Seat Cushion and S ...
Running the Vehicle While Parked
It is better not to park with the engine running. But if you ever have to, here are some things to know.
WARNING
Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine ex ...
Error Messages
If Disc Read Error displays and/or the disc comes out, it could be for one of
the following reasons:
The disc has an invalid or unknown format.
The disc is not from a correct region.
The dis ...