This light will come on if your vehicle has certain non-emission related problems.

For example, if the entire electrical system fails to send and receive messages from the vehicle's components, the SERVICE VEHICLE SOON warning light comes on.

These problems may not be obvious and may affect vehicle performance or durability. Consult a GM dealership for necessary repairs to maintain top vehicle performance. This light will come on briefly when the ignition is turned on to show that it is working properly.