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:
Battery Voltage and Charging Messages
BATTERY SAVER ACTIVE
This message displays when the vehicle has detected that the battery voltage is dropping beyond a reasonable point. The battery saver system starts reducing certain features of t ...
Key Lock Release
Vehicles with an automatic transmission are equipped with an electronic key lock
release system. The key lock release is designed to prevent ignition key removal
unless the shift lever is in P ( ...
Heated Mirrors
For vehicles with heated mirrors:
(Rear Window Defogger):
Press to heat the mirrors.
See “Rear Window Defogger” under
Automatic Climate Control System for more information. ...