2003 Chevrolet Tahoe Owner's Manual - Page 202

Fuel Gage Here are some situations you may experience with your fuel gage. None of these indicate a problem with the fuel gage. At the gas station, the fuel pump shuts off before the gage reads full. It takes a little more or less fuel to fill up than the fuel gage indicated. For example, the gage may have indicated the tank was half full, but it actually took a little more or less than half the tank's capacity to fill the tank. The gage goes back to empty when you turn off the ignition. United States Canada Low Fuel Warning Light The fuel gage, when the ignition is on, tells you about how much fuel you have left in your tank. The gage will first indicate empty before you are out or fuel, and you should get more fuel as soon as possible. When the fuel tank is low the FUEL LEVEL LOW message will appear. See Driver Information Center (DIC) on page 3-52. The light next to the fuel gage will come on briefly when you are starting the engine. This light comes on when the fuel tank is low on fuel. To turn it off, add fuel to the fuel tank. See Fuel on page 5-5. 3-5 1