The combination turn signal and hazard flasher unit is located under the dash on the left side near the fuse box. The flasher unit is not the classic round "can" found on many domestic cars; instead, it is a small box-shaped unit easily mistaken for another relay. Depending on the year and model of your Nova or Prizm, the flasher may be plugged directly into the fuse and relay panel or it may be plugged into its own connector and mounted near the fuse panel. The flasher unit emits the familiar ticking sound when the signals are in use and may be identified by touching the case and feeling the "click" as the system functions.
The flasher unit simply unplugs from its connector and a replacement may be installed. Assuming that all the bulbs on the exterior of the car are working properly, the correct rate of flash for the turn signals or hazard lights is 60-75 flashes per minute. Very rapid flashing on one side only or no flashing on one side generally indicates a failed bulb rather than a failed flasher.