Garmin Nuvi GPS devices come with a built-in map database that stores your current location and routes. If you no longer need the map data, you can delete it from your Garmin Nuvi. To delete a map:

  1. Open the Garmin Nuvi’s main menu screen.
  2. Select “Maps.”
  3. Select the map you want to delete.
  4. Press the “Delete” button. ..