2011 Chevrolet Volt Owner's Manual - Page 136

5-16 Instruments and Controls Compass The vehicle has a compass display in the instrument cluster above the speedometer. The compass receives its heading and other information from the Global Positioning System (GPS) antenna and vehicle speed information. The compass system has automatic calibration and zone adjustment features. Avoid covering the GPS antenna for long periods of time with objects that may interfere with the antenna's ability to receive a satellite signal. See Multi-Band Antenna on page 7‑18 for the location of the vehicle's antenna. The compass system is designed to operate for a certain number of miles or degrees of turn before needing a signal from the GPS satellites. The compass system will automatically determine when a GPS signal is restored and provide a heading. Battery Gauge (High Voltage) Fuel Gauge This indicator displays the high voltage battery charge level. When this indicator is displayed in the foreground, the vehicle is operating in Electric Mode. The number next to the indicator displays an estimate of how far the vehicle can be driven while in this mode. See Electric Mode on page 9‑25. This indicator displays the fuel level. When this indicator is in the foreground, the vehicle is operating in Extended Range Mode. The number next to the indicator displays an estimate of how far the vehicle can be driven while in this mode. See Extended Range Mode on page 9‑25.