Android Auto won't use the vehicle's GPS Antenna anymore.
After the July 2018 uConnect update, Google Maps on Android Auto in my gas 2018 Limited stopped using the vehicle's GPS antenna. It started when my wife and I still had our Galaxy S8/S9, and has continued when we got our Pixel 3s in November.
When connected to the car and Google Maps is in use, the icon on the phone's status bar that signifies the phone's location is being used is always on. The only way to get reliable GPS signal is to keep the phone on the dash (which will overheat the phone on a sunny day), or leave the moon roof open. I've verified that the vehicle's GPS antenna still works by using the Pacifica's built-in navigation.
Has anyone else experienced this issue? I saw it mentioned starting at post #103 near the end of the "OTA issued July 14th 2018" thread in the Hybrid sub-forum. (Sorry, first post so can't include the link).