Fuel Gage

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The instrument panel cluster (IPC) displays the fuel level as determined by the powertrain control module (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 a pre-determined value, the IPC illuminates the low fuel indicator.