2002 GMC Sonoma Owner's Manual - Page 152

Fuel Gage Here are four things that some owners ask about. None of these show a problem with your fuel gage: D At the gas station, the gas pump shuts off before the gage reads full. D It takes a little more or less fuel to fill up than the 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. speed up. D The gage moves a little when you turn a corner or United States Canada D The gage doesn't go back to empty when you turn off the ignition. When the ignition is on, the fuel gage tells you about how much fuel you have remaining. 2-82