Indicator/Warning Message 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 is below 5 percent. The ECM sends a GMLAN message to the instrument panel cluster (IPC) requesting the CHANGE ENGINE OIL message. 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 message 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
Driver Door Ajar Switch
The DDM receives a discrete input from the driver door ajar switch. The IPC and IRC receive the status of the driver door from the DDM via GMLAN serial data. When the driver door is open/ajar and the vehicle is in any gear other than PARK, the driver information center (DIC) will display DRIVER DOOR AJAR. If the door is still ajar and the vehicles speed is greater than 4.8 km/h (3 mph) the DDM will send GMLAN serial data message to the IRC requesting 5 chimes to sound.
ENGINE OIL LOW
The driver information center (DIC) displays ENGINE OIL LOW ADD OIL message 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 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 Indicator
The instrument panel cluster (IPC) displays the engine oil pressure indicator as determined by the engine control module (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 engine oil pressure (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 GMLAN serial data message. The IPC receives a GMLAN message requesting display of the engine oil pressure indicator from the ECM.
ENGINE OIL PRESSURE LOW
The driver information center (DIC) displays OIL PRESSURE LOW STOP ENGINE message 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.
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 GMLAN message indicating the fuel level information from the engine control module (ECM).
ICE POSSIBLE
The driver information center (DIC) displays ICE POSSIBLE DRIVE WITH CARE for 10 seconds when the HVAC module determines that the outside air temperature has dropped below 2.0°C (36°F). The instrument panel cluster (IPC) receives a GMLAN message from the HVAC module to display the outside air temperature.
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.
Left Rear Door Ajar Switch
The LRDM receives a discrete input from the left rear door ajar switch. The IPC and IRC receive the status of the left rear door from the LRDM via GMLAN serial data. When the left rear door is open/ajar and the vehicle is in any gear other than PARK, the driver information center (DIC) will display LEFT REAR DOOR AJAR. If the door is still ajar when the vehicles speed is greater than 4.8 km/h (3 mph) the LRDM will send a GMLAN serial data message to the IRC requesting 5 chimes to sound.
Passenger Door Ajar Switch
The PDM receives a discrete input from the passenger front door ajar switch. The IPC and IRC receive the status of the passenger door from the PDM via GMLAN serial data. When the passenger door is open/ajar and the vehicle is in any gear other than PARK, the driver information center (DIC) will display PASSENGER DOOR AJAR. If the door is still ajar when the vehicles speed is greater than 4.8 km/h (3 mph) the PDM will send a GMLAN serial data message to the IRC requesting 5 chimes to sound.
Right Rear Door Ajar Switch
The RRDM receives a discrete input from the right rear door ajar switch. The IPC and IRC receive the status of the right rear door from the RRDM via GMLAN serial data. When the right rear door is open/ajar and the vehicle is in any gear other than PARK, the driver information center (DIC) will display RIGHT REAR DOOR AJAR. If the door is still ajar when the vehicles speed is greater than 4.8 km/h (3 mph) the RRDM will send a GMLAN serial data message to the IRC requesting 5 chimes to sound.
SERVICE VEHICLE SOON
The driver information center (DIC) displays SERVICE VEHICLE SOON message 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 through the BCM.
TIGHTEN GAS CAP
The driver information center (DIC) displays TIGHTEN GAS CAP message when the fuel tank cover is not tight. The IPC receives a GMLAN message indicating the fuel tank cover needs to be tightened.