Change Engine Oil

The instrument panel cluster (IPC) illuminates the CHANGE ENGINE OIL message when the powertrain control module (PCM) determines that the engine oil should be changed. The IPC receives a class 2 message from the PCM requesting illumination. Once the oil is changed, perform the engine oil monitor reset procedure in order to clear the Change Engine Oil indicator. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.