Low Fuel Telltale
If the fuel level is low, the PCM will send a message to the BCM, which sends a message to the I/P cluster over the Class II link to turn On the Low Fuel telltale. The Low Fuel telltale will illuminate when approximately 3.8 - 5.7 liters (1 - 1.5 gallons) of usable fuel remains in the tank. Fuel level on Scan tool will read below 11%.