Just got an 08 Silverado loaded with Nav (not dvd tv). Everything appears fine except that the GPS is not working. I guess I will take it back to the dealer, but I am wondering if anyone things I have done something wrong that I can fix. I just got it today. The map works, but it thinks I am in Washington DC, no GPS. Any thoughts would be appreciated.

 

The first problem you have is that you overpaid for the nav. With the price of portable nav units I don't know why anyone would spend the extra money the dealerships charge for this.

 

When I installed mine I had to drive around for about 20 miles on the highway so my GPS could find the satalites. Trees & large buildings will block the signal, & mine is a 2007

 

Like chas said, try driving around for a while, I have seen them take 24 hours to recognize. Another thinig to check is to make sure your map region is set for the right area..... canada, usa, or europe

 

Because they look good and I don't have to take it off the dash and hide it everytime I park and mostly because $2,250 is chump change, but we all understand if you can't afford it; nothing to be ashamed about.

 

no kidding. if you don't have a useful response why bother responding at all. just because you think the nav units are overpriced doesn't mean everyone does. i have it in mine and in my 05 jeep grand cherokee and like both of them. my friends have the portable ones and i don't think they are as user friendly as mine are.

 

Did you apply aftermaket tinting to your windows?

There's a section in the Navigation manual regarding why Vehicle Positioning may not be working.