Change Engine Oil Soon

The DIC illuminates the CHANGE ENGINE OIL SOON message when the Powertrain Control Module (PCM) determines that the engine oil should be changed. The DIC receives a class 2 message from the PCM indicating the remaining oil life percent. Once the oil is changed, perform the engine oil monitor reset procedure in order to clear the CHANGE ENGINE OIL SOON indicator. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.