K 1500 Suburban 4WD V8-4.8L VIN V (2003)
Temperature Warning Lamp/Indicator: Description and Operation
Engine Coolant Indicators
ENGINE COOLANT HOT
The IPC displays ENGINE COOLANT HOT message when the IPC determines that the coolant temperature is greater then 121°C (249.8°F). The IPC
receives a class 2 message from the PCM indicating the coolant temperature.
ENGINE OVERHEATED
The IPC displays ENGINE OVERHEATED message when the IPC determines that the coolant temperature is greater than 128°C (262°F). The IPC
receives a class 2 message from the PCM indicating the coolant temperature.
LOW COOLANT
The IPC displays LOW COOLANT message when the IPC detects a low coolant level condition from the PCM. The IPC receives a class 2 message
from the PCM indicating the coolant level.
REDUCED ENGINE POWER
The IPC displays REDUCED ENGINE POWER message when the IPC detects a reduced engine power condition from the PCM. The IPC receives a
class 2 message from the PCM requesting illumination when the engine temperature reaches 132°C (270°F).
