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I've had my 2016 Yukon XL for almost a month now.
It came equipped with Forward Collision Alert (FCA), Active Cruise Control (ACC) and forward automatic braking.
The automatic braking works fine when ACC is engaged but does not seem to work if ACC is not engaged.
In addition, when ACC is engaged, the little green car icon (in FCA) changes to amber (like it is supposed to) as I get close to a followed vehicle, but NEVER changes color if ACC is not engaged. I can get right up to the rear bumper of the vehicle in front of me and the icon remains green.
I've read and re-read the owners manual and I find nothing that says that FCA and automatic braking only works when ACC is active.
Has anyone else experienced a similar issue?
Thanks