Just bought a 2019 Touring yesterday. I have CarPlay in one other car (a Volvo) so have some experience with it. In our Ascent, the voice navigation via CarPlay (from Apple Maps, Waze, etc.) is very loud. The voice nav audio seems to be output using a different speaker(s) than the stereo, unlike the Volvo. I have yet to find any way to set the volume of the CarPlay voice nav audio. I've searched for some information about this but have been unable to find anything. So if anyone has an idea about this, I'd sure appreciate it.