Service All-Wheel Drive Light

This light should come

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:

    Reading Lamps
    There are front and rear reading lamps. The front reading lamps are located in the overhead console. Press to turn each lamp on or off. The rear reading lamps are located in the headliner. ...

    Engine Cooling System Messages
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    Key and Lock Messages
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