Tahoe 2WD V8-4.8L VIN V (2004)
Oil Pressure Gauge: Description and Operation
ENGINE OIL PRESSURE GAGE
The IPC displays the engine oil pressure as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine oil
pressure. The engine oil pressure gage defaults to 0 kPa (0 psi) or below if:
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The PCM detects a malfunction in the engine oil pressure sensor circuit.
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The IPC detects a loss of class 2 communications with the PCM.
