Qualcomm and Rand McNally GPS signal blocked! Please help!

I always have a route programmed into Google maps for that very reason.

 

Not to mention, even though it's a car GPS, I run google maps every day on my dedicated run. It tells me if the road is shut down usually soon enough I can take another route. And don't give me the CB lie, I've never once had someone actually let me know soon enough to matter.

 

Cool brother, glad I could help, along the others that mentioned magnetic interference. In my years of electronics work this still seems to be what cause weird crap like this. I used to see it daily in one of my jobs.