Fuel Gauge

The IPC displays the fuel level as determined by the ECM. The IPC receives a GMLAN message from the ECM indicating the fuel level percent. The fuel gauge defaults to empty if:

• The ECM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of GMLAN communications with the ECM.
• When there is little or no fuel in the tank.

When the fuel level is less than a pre-determined value, the low fuel or very low fuel indicators illuminate on the DIC.