Indicator/Warning Message Description and Operation

Indicator/Warning Message Description and Operation




















CHANGE OIL

The instrument panel cluster (IPC) illuminates the CHANGE OIL indicator when the engine control module (ECM) determines that the engine oil should be changed. The IPC receives a class 2 message from the ECM 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 indicator. Refer to GM Oil Life System Resetting (Service and Repair) .


FUEL CAP

The IPC illuminates the FUEL CAP message in the driver information center (DIC) when the ECM detects a low fuel pressure condition. The IPC receives a class 2 message from the ECM requesting illumination.


FUEL

The IPC illuminates the FUEL message in the DIC when the IPC detects that the fuel level is less than a pre-determined value. The IPC receives a class 2 message from the ECM indicating fuel level percent.


LOW OIL PRESSURE

The instrument panel cluster (IPC) displays the low engine oil pressure indicator as determined by the engine control module (ECM). The ECM monitors the engine oil pressure switch signal circuit to determine the engine oil pressure. The ECM sends the EOP information to the IPC via the serial data circuit. The IPC receives a serial data message from the BCM requesting display of the low engine oil pressure indicator from the ECM.


OIL

The IPC illuminates the OIL message in the DIC when the ECM detects a low oil pressure condition with the signal circuit low. The IPC receives a class 2 message from the ECM requesting illumination.


OIL LIFE

The IPC illuminates the OIL LIFE message when the ECM determines that the engine oil should be changed. The IPC receives a class 2 message from the ECM indicating the remaining oil life percent.


UPSHIFT INDICATOR

The IPC illuminates the UPSHIFT INDICATOR when the ECM determines that the vehicle should be shifted to the next higher gear. The IPC receives a class 2 message from the ECM requesting illumination.