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:

    Head Restraints
    The vehicle’s front seats have adjustable head restraints in the outboard seating positions. WARNING: With head restraints that are not installed and adjusted properly, there is a greater chan ...

    Checking Engine Oil
    It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handl ...

    Coverage
    Services are provided up to 5 years/100,000 miles (160 000 km), whichever comes first. In the U.S., anyone driving the vehicle is covered. In Canada, a person driving the vehicle without permissi ...