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:

    Steering in Emergencies
    • There are some situations when steering around a problem may be more effective than braking. • Holding both sides of the steering wheel allows you to turn 180 degrees without removing ...

    Vehicle Identification Number (VIN)
    Vehicle Identification Number (VIN) This legal identifier is in the front corner of the instrument panel, on the driver side. It can be seen through the windshield from outside. The VIN also ...

    Adaptive Forward Lighting (AFL)
    The Adaptive Forward Lighting System (AFL) pivots the headlamps horizontally to provide greater road illumination while turning. To enable AFL, set the exterior lamp switch to the AUTO posit ...