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:
Retained Accessory Power (RAP)
Your vehicle has a Retained Accessory
Power (RAP) feature which lets certain features of
your vehicle to continue to work up to 20 minutes
after the ignition key is turned to LOCK.
The radio, po ...
Activating a Setting
1. Turn the Menu knob to highlight
the setting.
2. Press SELECT to activate the
setting. ...
Washing the Vehicle
To preserve the vehicle's finish,
wash it often and out of direct
sunlight.
Notice:
Do not use petroleum
based, acidic, or abrasive
cleaning agents as they can
damage the vehicle's paint, ...
