2013 Chevrolet Impala Owner Manual - Page 107

Instruments and Controls When the ignition is on, the fuel gauge indicates about how much fuel is left in the fuel tank. An arrow on the fuel gauge indicates the side of the vehicle the fuel door is on. Here are four things that some owners ask about. None of these show a problem with the fuel gauge: . 5-11 Engine Coolant Temperature Gauge At the gas station, the gas pump shuts off before the gauge reads full. It takes a little more or less fuel to fill up than the gauge indicated. For example, the gauge may have indicated the tank was half full, but it actually took a little more or less than half the fuel tank's capacity to fill the tank. The gauge moves a little when while turning a corner or speeding up. The gauge does not go back to empty when the ignition is turned off. Metric English This gauge shows the engine coolant temperature. If the gauge pointer moves toward the "H" (United States) or torward the shaded thermostat (Canada), it means that the engine coolant has overheated. If the vehicle has been operating under normal driving conditions, pull off the road, stop the vehicle, and turn off the engine as soon as possible. See Engine Overheating on page 10‑14 for more information. . . .