I fail.to see how it couldn't be, since not only is it an Android but it is a google Android device. If Google's Android Auto doesn't work with Google's phone that would be an epic fail.
I run a Pixel 2 XL on my Bolt. Aside from the Bolt occasionally refusing to recognize that the Android Auto capable device is plugged into it, I've had no troubles. When that does happen, restart of the device and the infotainment brings it back. All in all not much worse then when I was running an iPhone 6 on the car.