G6 L4-2.4L VIN B (2006)
Fuel Gauge: Description and Operation
FUEL GAGE
The instrument panel cluster (IPC) displays the fuel level as determined by the powertrain control module (PCM) or the engine control module (ECM).
The IPC receives a GMLAN message from the body control module (BCM) indicating the fuel level volume. The fuel gage defaults to E (empty) if:
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The PCM/ECM detects a malfunction in the fuel level sensor circuit.
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The IPC detects a loss of GMLAN communications with the BCM.
When the fuel level is less than 14 percent, the low fuel indicator illuminates.
