Lately I've noticed hat my GPS display hs been showing the symbol for "no GPS signal" about 75% of the time. I'll be driving down one road, and the GPS show that I'm somewhere else entirely. Has anyone else experienced this?

 

No, but I don't use mine much. The biggest problem I've had is several of the highways in New Mexico are mis-labeled.

 

Mine seems to be working fine.

 

Every once in awhile, I'll notice that the GPS isn't active, but no issues to speak of.

My previous Tahoe, however, had moments where it would place the vehicle several hundred yards from the correct position for several hours. (only happened a few times)

 

I think I figured it out. The GPS antenna is located in the dash. Anything placed on the dash could block the signal. In my case I'm a volunteer firefighter and had my blue light mounted there, thus blocking the signal. TSB #08-08-44-027 covers the issue. I took off the light and it seems to have cleared up.