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Instrument Panel, Gauges and Warning Indicators: Description and Operation



INDICATOR/WARNING MESSAGE DESCRIPTION AND OPERATION













IPC INDICATORS







DIC WARNING MESSAGES

CHANGE ENGINE OIL
The driver information center (DIC) displays the CHANGE ENGINE OIL SOON message when the engine control module (ECM) determines that the engine oil life drops below 5 percent. The ECM sends a GMLAN message to the instrument panel cluster (IPC) requesting the CHANGE ENGINE OIL display. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System - Resetting. Refer to the following before adding or changing engine oil:
- When the Low Engine Oil Level/Change Engine Oil Soon indicator displays in the IPC or DIC due to a low engine oil level condition, make sure that the ignition is turned OFF before adding or changing the oil in the vehicle. Failure to do so may result in the Low Engine Oil Level/Change Engine Oil Soon or message staying on after the engine attains proper oil level.
- When the Low Engine Oil Level/Change Engine Oil Soon indicator displays in the IPC or DIC and the ignition is not turned OFF before adding or changing the engine oil, the Low Engine Oil Level/Change Engine Oil Soon indicator may stay ON even after the proper oil level is attained. For the Low Engine Oil Level/Change Engine Oil Soon to turn OFF, the engine has to undergo a thermocycle process, refer to Indicator/Warning Message Description and Operation. The description of the Low Engine Oil Level/Change Engine Oil Soon in this section will outline how to clear the indicator.
- Before replacing the IPC because of the Low Engine Oil Level/Change Engine Oil Soon staying ON after an oil change or engine oil addition, it is necessary for the engine to undergo a thermocycle process as stated above. The IPC may not be malfunctioning but only needs the Low Engine Oil Level/Change Engine Oil Soon turned off. Refer to Indicator/Warning Message Description and Operation for an outline on how to clear the indicator. The description of the Low Engine Oil Level/Change Engine Oil Soon in this section will outline how to clear the indicator.

DRIVER 1 AND DRIVER 2
The driver information center (DIC) displays Driver 1 or Driver 2 warning to notify the driver when the Driver Identifier has changed. The BCM receives a serial data message from the RCDLR when the vehicle is accessed via the key fob and depending on the key fob used, the BCM sends a driver identifier serial data message to the DIC. The DIC displays either Driver 1 or Driver 2 depending on the driver identifier serial data message from the BCM. When the driver is identified, the radio and other DIC information will revert to the last presets and settings used by the particular Driver 1 or Driver 2.

ENGINE OIL PRESSURE
The instrument panel cluster (IPC) displays the engine oil pressure as determined by the ECM. The ECM monitors the engine oil pressure sensor signal circuit to determine the engine oil pressure. When the engine oil pressure is high, the EOP sensor voltage is high and the ECM senses a high signal voltage. When the engine oil pressure is low, the EOP sensor voltage is low and the ECM/PCM senses a low signal voltage. The ECM sends the EOP information to the instrument panel cluster (IPC) via GMLAN serial data message. The instrument panel cluster (IPC) receives a GMLAN message requesting display of the engine oil pressure indicator from the ECM.

ICE POSSIBLE
The driver information center (DIC) displays ICE POSSIBLE for 10 seconds when the outside air temperature drops below 2.0°C (36°F). The instrument panel cluster (IPC) receives a GMLAN message indicating the outside air temperature from the HVAC control module

KM/H AND MPH
km/h: The instrument panel cluster (IPC) displays the km/h indicator when the cluster detects that Metric units have been requested.
MPH: The IPC displays the MPH indicator when the cluster detects that English units have been requested.

FUEL LEVEL LOW
The driver information center (DIC) displays FUEL LEVEL LOW when the instrument panel cluster (IPC) determines that the fuel level is less than 7.84 percent. The IPC receives a GMLAN message indicating the fuel level information from the engine control module (ECM).

ENGINE OIL LOW
The driver information center (DIC) displays ENGINE OIL LOW ADD OIL when the engine control module (ECM) detects a low engine oil level condition from the engine oil level sensor/switch. The instrument panel cluster (IPC) receives a GMLAN message indicating a low engine oil level condition. Refer to GM Oil Life System - Resetting. Refer to the following before adding or changing engine oil:
- When the Low Engine Oil Level/Change Engine Oil Soon indicator displays in the IPC or DIC due to a low engine oil level condition, make sure that the ignition is turned OFF before adding or changing the oil in the vehicle. Failure to do so may result in the Low Engine Oil Level/Change Engine Oil Soon or message staying on after the engine attains proper oil level.
- When the Low Engine Oil Level/Change Engine Oil Soon indicator displays in the IPC or DIC and the ignition is not turned OFF before adding or changing the engine oil, the Low Engine Oil Level/Change Engine Oil Soon indicator may stay ON even after the proper oil level is attained. For the Low Engine Oil Level/Change Engine Oil Soon to turn OFF, the engine has to undergo a thermocycle process, refer to Indicator/Warning Message Description and Operation. The description of the Low Engine Oil Level/Change Engine Oil Soon in this section will outline how to clear the indicator.
- Before replacing the IPC because of the Low Engine Oil Level/Change Engine Oil Soon staying ON after an oil change or engine oil addition, it is necessary for the engine to undergo a thermocycle process as stated above. The IPC may not be malfunctioning but only needs the Low Engine Oil Level/Change Engine Oil Soon turned off. Refer to Indicator/Warning Message Description and Operation for an outline on how to clear the indicator. The description of the Low Engine Oil Level/Change Engine Oil Soon in this section will outline how to clear the indicator.

OIL PRESSURE LOW
The driver information center (DIC) displays OIL PRESSURE LOW STOP ENGINE when the engine control module (ECM) detects low engine oil pressure condition from the engine oil pressure (EOP) sensor/switch. The instrument panel cluster (IPC) receives a GMLAN message requesting display of the indicator from the ECM.

SERVICE VEHICLE SOON
The driver information center (DIC) displays SERVICE VEHICLE SOON when the engine control module (ECM) detects certain malfunctions that are not related to the emissions system. The instrument panel cluster (IPC) receives a GMLAN message requesting illumination from the instrument panel module (IPM).

TIGHTEN GAS CAP
The driver information center (DIC) displays TIGHTEN GAS CAP when the fuel tank cover is not tight. The IPC receives a GMLAN message indicating the fuel tank cover needs to be tightened.

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