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:
Using the Call Command
1. Press and hold for two
seconds. The system
responds with “Ready” followed by a tone.
2. Say “Call”. The system responds with “Call using
<phone name>. Please say the name ta ...
Root Directory
The root directory is treated as a folder. If the
root directory has compressed audio files,
the directory displays as F1 ROOT. All files
contained directly under the root directory are
accessed p ...
Radio Messages
Calibration Error: The audio system has been
calibrated for the vehicle from the factory. If Calibration
Error displays, it means that the radio has not been
configured properly for the vehicle ...
