1997 GMC Suburban Owner's Manual - Page 148

Fuel Gage When the ignition is on, the fuel gage tells you about how much fuel you have left in your tank. 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. 0 The gage moves a little when you turn a comer or speed up. The gage doesn't go back to EMPTY (E) when you turn off the ignition. 0 None of these indicate a problem with the fuel gage. The gage will first indicate EMPTY (E) before you are out of fuel, and you should get more fuel as soon as possible. Listed are foursituations you may experience with your fuel gage: 0 For information on how to fill your fuel tank, see "Fuel -- Filling Your Tank" in the Index. For your fuel tank capacity, see "Fuel -- Tank Capacity" in the Index. For the diesel engine fuel gage, see your Diesel Engine Supplement. At the gas station, the fuel pump shuts off before the gage reads FULL (F).