My experience is the same as yours. I don't know a safe way to test it. Mine will sometimes give me an alert when there are parked cars on a curve.Noticed this Automatic Emergency Braking feature in the settings which is set to Alert and Brake. There’s been numerous times my Tahoe thinks I’m approaching a vehicle in front too quickly and it will alert me but it has never auto-braked. Is there any real way to tell if this feature even works? Obviously I don’t want to wreck it trying to test.
My wife has an Infiniti and it has auto-braking and it is quite obvious when it brakes for you.