Fuel Gage
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The ECM sends fuel level percent to the BCM via CAN serial data. The IPC displays the fuel level as determined by the BCM. The fuel gage defaults to E (empty) if:
- The ECM detects a malfunction in the fuel level sensor circuit.
- The IPC detects a loss of class 2 communications with the BCM.
- The BCM detects a loss of CAN communications with the ECM.
When the fuel level is less than a pre-determined value, the Low Fuel indicator message illuminates.