2016 Malibu 1LT 1.5T
I bet the learning process is ongoing. I'd give it at least the 500 miles. The bulletin says the tech is to perform the adaptive fast learn procedure but he/she might have cut a corner and skipped it. Side note... that bulletin outlining the calibration update 18-na-081 was moved to superceded in my alldata account. Problem is they didn't or haven't provided the revision yet. I can view the bulletin on nhtsa using the link above but I can't find it by searching for some reason.