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:
Spare Tire
Your vehicle, when new, had a fully-inflated
spare tire. A spare tire may lose air over time, so
check its inflation pressure regularly.
After installing the spare tire on your vehicle, you
should ...
Retained Accessory Power (RAP)
These vehicle accessories can be used for up to 10 minutes after the engine is turned off:
► Audio System
► Power Windows
► Sunroof (If Equipped)
► Auxiliary Power Outle ...
Outside Convex Mirror
CAUTION:
A convex mirror can make things (like
other vehicles) look farther away than they
really are. If you cut too sharply into the
right or left lane, you could hit a vehicle.
Check your ...
