2007 Tahoe LTZ if it matters. The Navigation screen works fine. The radio works fine. All seems fine except that my navigation coordinate seems to be off by a few miles. The actual location I am at is not what the navigation is reporting. I did notice that there is a red line across the GPS. I've never paid attention to this so I do not know if it is normal or not. I took the unit out and made sure everything was plugged in and it is. I do have a GMX-550 lockpick and I unplugged it and returned everything to stock. Still the navigation is not reporting my correct coordinate. Does anybody know what is going on or how to fix?
