Hi ROtechhelp
welcome to the Apple (user-to-user) Community.
Re: "Phone 14 wont ring in my 2023 xt5 Cadillac"
"Using car play, my phone wont ring over the car speaker. I’m not on silent and don’t have on do not disturb".
Am no expert in this area, yet your post to the Community surely deserves a reply.
Wondering if your iPhone has the newest update, iOS 16.5
Re: CarPlay incoming calls
Discussion thread on a similar situation, with trouble-shooting tips from a Community specialist
CarPlay incoming calls - Apple Community
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Else:
Wondering if Apple Support's online article (link below) is of any help:
Make and receive phone calls with CarPlay – Apple Support
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More CarPlay info:
If you need help with CarPlay – Apple Support
On some vehicle models, CarPlay Home appears automatically when you connect iPhone.
If CarPlay Home doesn’t appear, select the CarPlay logo on your vehicle’s display.
Your icon changes appear on CarPlay Home the next time you connect to CarPlay. If you:
Rearrange the icons on CarPlay Home – Apple Support :
Use your vehicle’s built-in controls to control CarPlay – Apple Support
Use other apps with CarPlay – Apple Support
Change settings in CarPlay – Apple Support
All the best :-)