Change Engine Oil
The IPC illuminates the ENGINE OIL CHANGE NOW message 82 in the Driver Information Center (DIC) when the Powertrain Control Module (PCM) determines that the engine oil life is 0 percent. The PCM sends a class 2 message to the IPC requesting illumination. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.