I just had my z2 serviced by pioneer (new screen, i broke the old one) had the local stereo shop do the removal and also the reinstallation and now the gps is way off location. When i am on i95 it shows that I am way off in another area? What gives. Is it something I have to set on the radio? I am not to familier with the technical aspect of the stereo but I can find my way with good directions

go the service menu of the unit, and check your satellite signal. Make sure you are receiving a good connection. That could be the cause of the problem.

Also you may want to try manually moving the cursor to your exact location. There's a command somewhere in the menu.

i dont knwo about the z series, but on my N1, my gps was totally messed up until i found out that my VSS (speed sensor) wire wasnt connected. then it was all good.