My odometer on My 2014 Sonic Is just showing 3 dots. The Mileage will show up sometimes
It’s a known problem for the 2013 model year but yours apparently came along for the ride. Try disconnecting the battery for several minutes and reconnecting it. That might “reboot” the instrument cluster. If not, you’ll need to go to a Chevrolet dealer and they may want to replace the cluster. Depending on the cost, you may want to live with it as is. Some owners have never been able to get their odometers to work properly.