2011 Chevrolet Volt Owner's Manual - Page 188

6-4 Lighting Hazard Warning Flashers Turn and Lane-Change Signals Raise or lower the lever until the arrow starts to flash to signal a lane change. Hold it there until the lane change is complete. If the lever is moved momentarily to the lane change position, the arrow will flash three times. The lever returns to its starting position when it is released. An arrow on the instrument cluster will flash in the direction of the turn or lane change. | (Hazard Warning Flasher): Press this button, on the center stack, to make the front and rear turn signal lamps flash on and off. This warns others that you are having trouble. Press | again to turn the flashers off. Move the lever all the way up or down to signal a turn. If a turn signal arrow flashes rapidly or does not come on, a signal bulb may need to be replaced. See Bulb Replacement on page 10‑34.