[splne1]

you just need to let the antenae calibrate itself to the current location on the vehicle. I have had three gps headunits in my vehicle so far,first stock worked great except hated you can't listen to radio while navigating, second jesen same thing you described and now KENWOOD, best purchase so far!! I have one in my avalanche and love it so much I replaced my H2 head unit to it. Hope it all works well, and I still have an 04-06 stock Nav head for all you other lookin. With map disc!!