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:

    Washer Fluid
    What to Use When windshield washer fluid is needed, be sure to read the manufacturer's instructions before use. If operating the vehicle in an area where the temperature may fall below freezing, use ...

    Cruise Control Light
    This light is white whenever the cruise control is set and turns green when the cruise control is active. The light goes out when the cruise control is turned off. See Cruise Control for mo ...

    Engine Coolant Temperature Warning Light
    This light comes on briefly while starting the vehicle. If it does not, have the vehicle serviced by the dealer/retailer. If the system is working normally the indicator light goes off. Noti ...