Service Vehicle Soon
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The DIC illuminates the SERVICE VEHICLE SOON indicator when the powertrain control module (PCM) detects certain malfunctions that are not related to the emissions system. The DIC receives a class 2 message requesting illumination from the PCM.