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:
Rear Window Lockout
This feature prevents the rear passenger windows from operating, except from
the driver position. The rear door locks will also be disabled and only operate
from the driver door. This feature on ...
Replacing Safety Belt System Parts after a Crash
WARNING!
A crash can damage the safety
belt system in the vehicle.
A damaged safety belt system
may not properly protect the
person using it, resulting in
serious injury or even death in a
...
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
• Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
• Trained dealer technicians hav ...
