I have some suggestions that you can try.
First, make sure that you have the most up-to-date version of the Chevy infotainment software installed . You will need to go into the vehicle settings to look for any updates. If I remember correctly, the software should guide you thru doing this, once you find the "update software" in the System settings.
Second, you want to go into the settings on the phone and make sure that Android Auto is allowed to run in the background without interruption, and that there is no kind of power interruption set for the app. You will want to go into the APPS tab in the phone settings to do this. Within the Android Auto apps page you will need to check both the data and battery settings to make sure that there are no restrictions so that the app can run all the time, whether the screen is off or on, whether it's running in the background or foreground, and that it can use as much battery and data as it needs all the time.
Thirdly, you want to make sure that Android Auto has ALL of the permissions it needs.
Fourthly, (and I'm don't quite remember how to do this - whether on the vehicle's Android Auto settings or the phone's), you want to make sure that having Android Auto 'open' (running) will keep the phone unlocked and 'awake'.
That's all I can think of at the moment.
I had to do this with a couple of phones in the past. Once I did all of this, I had no further problems. You didn't mention what year Equinox you have, or what make Phone you have - but I have noticed they all basically work the same, with the newer vehicle software getting better and better at running Android Auto, while the phone software makes it more and more difficult! LOL! Go figger!