K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Fuel Gauge: Description and Operation
The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel
gauge defaults to empty if:
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The PCM detects a malfunction in the fuel level sensor circuit.
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The IPC detects a loss of class 2 communications with the PCM.
When the fuel level is less than a pre-determined value, the low fuel indicator illuminates.
