Service Vehicle Soon
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the SERVICE VEHICLE SOON indicator in the message center when the ECM/PCM or the body control module (BCM) detects certain non-emissions related malfunctions. The IPC receives a class 2 message from the ECM/PCM or from the BCM requesting illumination.