Indicator/Warning Message Description and Operation

Indicator/Warning Message Description and Operation
























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 serial data 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 message staying on after the engine attains proper oil level.
* 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. The IPC may not be malfunctioning but only needs the Low Engine Oil Level/Change Engine Oil Soon to turn OFF. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System Resetting

Engine Oil Pressure

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 senses a low signal voltage. The ECM sends the EOP information to the instrument panel cluster (IPC) via a serial data message. The instrument panel cluster (IPC) receives a serial data message requesting display of the engine oil pressure indicator from the ECM.

ICE POSSIBLE

The driver information center (DIC) displays ICE POSSIBLE DRIVE WITH CARE for 10 seconds when the HVAC module determines that the ambient air temperature has dropped below 2.0°C (36°F). The instrument panel cluster (IPC) receives a serial data message from the HVAC module to display the ICE POSSIBLE DRIVE WITH CARE.

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 10.98 percent. The IPC receives a serial data 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 serial data 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 message staying on after the engine attains proper oil level.
* 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. The IPC may not be malfunctioning but only needs the Low Engine Oil Level/Change Engine Oil Soon to turn off. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System Resetting

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 serial data 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 serial data message requesting display of this message from the BCM.

TIGHTEN GAS CAP

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