Engine Oil

CHANGE ENGINE OIL
The IPC illuminates the CHANGE ENGINE OIL indicator in the message center when the 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.

CHECK ENG OIL LEVEL
The IPC illuminates the CHECK ENG OIL LEVEL indicator in the message center when the PCM detects a low engine oil level condition (signal circuit is high). The CHECK ENG OIL LEVEL indicator illuminates for 60 seconds at the start of each ignition cycle when this condition is present. The IPC receives a class 2 message from the PCM requesting illumination. The IPC sends a class 2 message to the radio in order to activate an audible warning.

CHECK ENGINE OIL PRESSURE
The IPC illuminates the CHECK ENG OIL PRESSURE indicator in the message center when the IPC detects low oil pressure from the engine oil pressure sensor signal. The CHECK ENG OIL PRESSURE indicator will illuminate in the message center when this condition is present.