Just picked up a 2007 Escalade last week, got about 450 miles on it now.

Yesterday I started the truck up and the navigation screen was showing a GPS with a red line through it in the upper left hand corner of the nav screen.

The nav seems to track direction correctly, just shows the wrong map all the time.

Any idea how to reset it or should I just head back to the dealer for a new unit?

Thanks.

GPS symbol with red line through means, Your Nav Radio not getting any signal from Satellite. I would go to the dealer and have them check the antenna

Both on my 07' have done that a time or two, it usually lasts a minute or two, it's happened a few times in each truck.