I was having trouble with the voice commands on my 2017 Premier. The dealer told me it was probably a phone issue but when I took the car in the Volt Tech had the same issue with his phone once it was paired. He had no idea what was causing it so he call GM Tech support. It seems that Volts get what he called a "logic lock" and the voice commands stop working. What needs to be done to fix the issue it to go into settings, change the language to Spanish (not sure if other languages will work) then shut down the car for 5 minutes. Go back into the system and change the language back to English and the voice commands will work fine.
I'm not sure why this works but it dose and I haven't had any problem since.
I hope this helps.
I'm not sure why this works but it dose and I haven't had any problem since.
I hope this helps.