About 15 minutes into my hour drive home today Lane Keeping Assist turned off on it's own on my '16 Sierra Denali. Attempting to toggle it back on produced the following message on my dashboard, "Lane Keeping Assist System Unavailable". I called onStar and they asked to see if their was anything obstructing the view of the camera on the windshield (by the rear view mirror). I said no it's a new car and even sprayed the windshield down via washer fluid before calling. For the rest of the ride home it was unavailable. Took a photo which I will post here. Can't find anything online related to the Sierra but found this related to the CTS.
Anyone every experience this? Brand new truck. Only a few hundred miles on it.