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:

    Rear Seats
    Rear Seat Pass-Through Door Your vehicle has a pass-through door that provides access to the trunk from the rear seats. See “Rear Seat Pass-Through Door” under Trunk. ...

    Once a Year
    • Starter switch check. See Owner Checks and Services. • Parking brake and automatic transmission P (Park) mechanism check. See Owner Checks and Services. • Automatic transmission shiftl ...

    Portable Audio Devices
    Some vehicles have a 3.5 mm (1/8 in) auxiliary input and a USB port located in the center console. External devices such as iPods®, laptop computers, MP3 players, CD changers, and USB drives may ...