I thought it was clever how GM got out of providing a GPS navigation system. That could have provided a lot of features, like showing charging stations, etc. Instead we have Google Maps and Waze. When using these just on my Samsung Galaxy Note3, they work just fine. When plugged into the console USB port, it displays on Projection/Android Auto. Maps says that it is searching for GPS signal. Waze just says follow the highlited course. Waze will work if the phone is on the dash, right under the window, but watch out for those tight L hand turns! Neither Waze nor Maps knows where I am, tells me to get on roads not around me and so forth and you can't deselect one or the other - very frustrating. My solution is to mount my Garmin Nuvi on the dash. Have others had navigation problems with their Android smartphones? Thank you.