2010 Aveo defog and ac/heater not working. Where is ground?

The rear defogger and ac/heater are not working on my 2010 Aveo. I was told it may be a loose/faulty ground wire. How can I locate where the ground for either or both of these is bolted or attached to the car?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0