Gps works well with antenna inside dash

Nice having GPS in head unit

Also, the gps antina input port wire does not work with the car's antena wire

GPS must be connected to a phone or hotspot to work

Everything else works flawlessly on this unit, GPS included.

Add a mapping software to an available mini SD card slot and You get an amazing GPS system

I did have to buy two things, a ground loop filter found here on Amazon as well as a GPS

It fits perfect in my impala ss