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:
Replacement Bulbs
For replacement bulbs not listed here, contact your dealer. ...
Call Waiting
Call waiting must be supported on the Bluetooth phone and enabled by the wireless
service carrier to work.
Accepting a Call
Turn the TUNE/MENU knob to “Answer” and press TUNE/MENU to accept th ...
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service might be
required. ...