i also did the whole drive around thing and look so when I'm going forward it shows forward and the wheel sensor shows positive numbers, when in reverse shows negative. I've also pulled the fuse(s) for the navi and then let it sit and still nothing. Any ideas?

Can you reset it ?

guys never mind i was in NJ today and it picked up a satelite. yesterday it had little dots today it actually picked up the 3 cubes and said gps. i guess i lost signal long enough to have it go crazy and todayit reset itself. thanks for everyones suggestions though