On my 2018 RAM, the 8.4C GPS works ok but I prefer using the 8.4C with Waze and also I use the Garmin RV 770 LMT-S RV GPS which gives me height clearances when pulling my 5th wheel. Apple Car Play allows Waze to be displayed on the screen. It is so much more functional than the RAM GPS or Google Maps, especially while operating in big cities. What other GPS programs give you pothole notifications, police notifications and real-time notifications from other drivers? NONE that I know of. I just wish Waze would give Satellite views as Google Maps does. If you have apple Car Play don't waste your $$$ on the update. Use Waze!!