Fuel Level Low
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The driver information center (DIC) displays FUEL LEVEL LOW when the instrument panel cluster (IPC) determines that the fuel level is less than 7.84 percent. The IPC receives a serial data message indicating the fuel level from the engine control module (ECM).