Fuel Gage

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

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 gage defaults to empty if:

The PCM detects a malfunction in the fuel level sensor circuit.
The IPC detects a loss of class 2 communications with the PCM.

When the fuel level is less than 14% (84Ω), the low fuel indicator illuminates.