Instrument Panel, Gauges and Warning Indicators: Description and Operation

INDICATOR/WARNING MESSAGE DESCRIPTION AND OPERATION













INDICATORS




DIC WARNING MESSAGES

CHANGE OIL
The instrument panel cluster (IPC) illuminates the CHANGE OIL indicator when the powertrain control module (PCM) determines that the engine oil should be changed. The IPC 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 indicator. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.

CHECK FUEL CAP
The instrument panel cluster (IPC) illuminates the CHECK FUEL CAP message in the driver information center (DIC) when the powertrain control module (PCM) detects a low fuel pressure condition. The IPC receives a class 2 message from the PCM requesting illumination.

LOW ENGINE OIL PRESSURE
The instrument panel cluster (IPC) illuminates the LOW ENGINE OIL PRESSURE indicator in the message center when the powertrain control module (PCM) detects low engine oil pressure (EOP), and the signal circuit is low. The IPC receives a class 2 message requesting illumination message from the PCM.

LO FUEL
The instrument panel cluster (IPC) illuminates the LO FUEL message in the driver information center (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 powertrain control module (PCM) indicating fuel level percent.

OIL
The instrument panel cluster (IPC) illuminates the OIL message in the driver information center (DIC) when the powertrain control module (PCM) detects a low oil pressure condition with the signal circuit low. The IPC receives a class 2 message from the PCM requesting illumination.

OIL LIFE
The instrument panel cluster (IPC) illuminates the OIL LIFE 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 indicating the remaining oil life percent.

UPSHIFT INDICATOR
The instrument panel cluster (IPC) illuminates the UPSHIFT INDICATOR when the powertrain control module (PCM) determines that the vehicle should be shifted to the next higher gear. The IPC receives a class 2 message from the PCM requesting illumination.