Change Oil Soon
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The driver information center (DIC) displays the CHANGE ENGINE OIL message when the powertrain control module (PCM)/engine control module (ECM) determines that the engine oil life is 0 percent. The PCM/ECM sends a GMLAN serial data message to the BCM to request the DIC to display the CHANGE ENGINE OIL message. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System Resetting .