Re: Google mapls gps on Kit Kat?
Haven't tried it (I'm not a convert - I've frozen the update app and I'm still on 4.3, but my wife updated to 4.4.2) but without MyDirections, I'd rather use a paper map even if I'm driving alone. (Or reinstall an older version of Navigation and turn off the update for it.) If you drive to a lot of different places all the time, and need navigation to them, Maps alone is worse than useless, it's maddening. (MyDirections makes using it a pleasure.)
If you're having problems with it, though, see the Samsung people at Best Buy. 4.4.2 was supposed to fix GPS problems, not cause them. A reflash of the update might fix it.