ABS: Refer to

Brake: Refer to Brake Warning System Description and Operation

Change Engine Oil: The IPC displays this indicator when the ECM determines that the engine oil should be changed. 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

Charge: Refer to Charging System Description and Operation

Check Gages: The IPC displays this indicator as determined by the ECM). The ECM requests this indicator ON when the ECM detects that the engine coolant temperature is higher than normal or the engine oil pressure is lower than normal.

Differential Lock: Refer to Locking Differential Description and Operation

DRL: Refer to Exterior Lighting Systems Description and Operation

Engine Shutdown: Refer to Cooling System Description and Operation

Exhaust Brake: Refer to Exhaust System Description

Fasten Safety Belt: Refer to Seat Belt System Description and Operation

High Beam: Refer to Exterior Lighting Systems Description and Operation

Increase Engine RPM: Refer to Power Take-Off (PTO) Description and Operation

Low Air: Refer to Air Brake System Description and Operation

Low Coolant Level: Refer to Cooling System Description and Operation

Low Engine Oil Level: Thisindicator displays in the IPC when the PCM detects a low engine oil level condition from the engine oil level switch/sensor.

Low Washer Fluid: Refer to Wiper/Washer System Description and Operation

Malfunction Indicator Lamp: The IPC displays the MIL as determined by the ECM. The ECM commands the indicator ON when an emission related malfunction exists

Reduced Engine Power: Refer to Cooling System Description and Operation

Reduce Engine RPM: Refer to Power Take-Off (PTO) Description and Operation

Service Brake Soon: Refer to Brake Warning System Description and Operation

Service Transmission: Refer to Transmission System Description and Operation

Trailer ABS: Refer to Air ABS Description and Operation

Turn Signals: Refer to Exterior Lighting Systems Description and Operation

Wait to Start: Refer to Glow Plug System Description for the 7.8L (LF8) engine

Water in Fuel: The iIPC displays the water in fuel indicator in the message center when the water in fuel sensor detects water in the fuel system. The water in fuel sensor signal is low.