Indicators

INDICATOR/WARNING MESSAGE DESCRIPTION AND OPERATION










INDICATORS







DIC WARNING MESSAGES

CHANGE ENGINE OIL NOW
The instrument panel cluster (IPC) illuminates the CHANGE OIL NOW message in the driver information center (DIC) when the powertrain control module (PCM) determines that the engine oil needs to be changed now. The PCM sends a class 2 message to the IPC requesting illumination. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.

CHANGE ENGINE OIL SOON
The instrument panel cluster (IPC) illuminates the CHANGE ENGINE OIL SOON message in the driver information center (DIC) when the powertrain control module (PCM) determines that the engine oil should be changed in the near future. The PCM sends a class 2 message to the IPC requesting illumination. After the oil is changed, reset the engine oil monitor. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.

CHECK GAUGES
The instrument panel cluster (IPC) illuminates the CHECK GAGES message when the IPC illuminates any of the following indicators.
- Charging system
- Engine coolant temperature
- Low coolant
- Low fuel
- Low oil pressure

HIGH OIL TEMPERATURE, REDUCE ENGINE RPM
The instrument panel cluster (IPC) illuminates the HIGH OIL TEMPERATURE message and then the REDUCE ENGINE RPM messages in the driver information center (DIC) in 3 second intervals if the IPC detects that the engine oil temperature exceeds 160°C (320°F). The IPC monitors the engine oil temperature signal circuit to determine the engine oil temperature. A low resistance indicates high engine oil temperature.

ICE POSSIBLE
The driver information center (DIC) illuminates the ICE POSSIBLE message when the outside air temperature drops below 2.0°C (36°F). When the temperature rises above 5.5°C (42°F) the ICE POSSIBLE message turns off. The IPC receives a class 2 message indicating the outside air temperature from the body control module (BCM).

KM/H AND MPH INDICATOR(S)

Km/h
The instrument panel cluster (IPC) illuminates the km/h indicator when the IPC detects that metric units have been requested. The IPC monitors the signal circuit of the ENG/MET switch. The IPC sends a class 2 message indicating the requested units to the head up display (HUD).

MPH
The instrument panel cluster (IPC) illuminates the mph indicator when the IPC detects that English units have been requested. The IPC monitors the signal circuit of the ENG/MET switch. The IPC sends a class 2 message indicating the requested units to the head up display (HUD).

LOW FUEL
The instrument panel cluster (IPC) illuminates the LOW FUEL message in the driver information center (DIC) when the engine control module (ECM) detects that the fuel level is less than a pre-determined value. The IPC receives a class 2 message from the ECM indicating the fuel level.

LOW OIL LEVEL
The instrument panel cluster (IPC) illuminates the LOW OIL LEVEL message in the driver information center (DIC) when the engine control module (ECM) detects low engine oil level, and the signal circuit is high. The PCM only monitors the signal circuit of the engine oil level switch for a brief period when the key moves from ON to START. The IPC receives a class 2 message requesting illumination from the ECM.

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

RESERVE FUEL
The instrument panel cluster (IPC) illuminates the RESERVE FUEL message driver information center (DIC) when the engine control module (ECM) detects the following conditions:
- The fuel level is less than 12 L for 60 seconds.
- The fuel level is less than 12 L for 5 seconds immediately after the ignition is turned ON, and the vehicle speed is less than 1 mph.

The IPC receives a class 2 message requesting illumination from the ECM.

SERVICE VEHICLE SOON
The instrument panel cluster (IPC) illuminates the SERVICE VEHICLE SOON message in the driver information center (DIC) when the engine control module (ECM) detects certain malfunctions that are not related to the emissions system. The IPC receives a class 2 message requesting illumination from the ECM.