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:
Dual Tone Multi-Frequency (DTMF) Tones
The in-vehicle Bluetooth system can send numbers during a call. This is used
when calling a menu-driven phone system.
For Radio with CD:
1. Turn or press the TUNE/MENU knob and select Enter Number ...
Interior Lighting
Courtesy Lamps
When any door is opened, the interior lamps turn on to
enter and exit the vehicle. Turn the instrument panel
brightness control located on the
left side of
the steering wheel, ...
Automatic Transmission
The automatic transmission has a shift lever located on the console between the
seats.
The selected gear is also shown in the instrument cluster.
P (Park): This position locks the drive wheels ...
