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:
Replacement Bulbs
For replacement bulbs not listed here, contact
your dealer. ...
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacemen ...
Headlamp Aiming
Headlamp aim has been preset and should need no further adjustment. If the vehicle
is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps
is necessary, see your de ...
