Not sure what happened, all of a sudden the street names stopped being spoken. Instead of saying "turn left at Paradise Drive", it now says "turn left at the street coming up", which I hate!!! I can't seem to find any setting that would impact this -- PLEASE HELP!!!!! What could it be?

I'm guessing you might have hit the "restore factory settings" at some point. To get it back go to Setting > System Settings > Regional Settings > Voice Language > US English (TTS). That should bring Text-to-Speech back.