7-10 times while stopped at a light or sign my 2015 LTZ, idles rough and jumps.
Chevy dealership told me it was the way General Motors designed the oil pump that the pressure made it idle this way on the 14-15-16.
I think its BS.
Too many Chevy Trucks, SUV's and GMC products are having problems.
I've been a life time Chevy guy,
But I'm going to change, Ford has basically the same engine and theirs doesn't act this way.
GM needs to fess up and fix this problem.
My wife has flat said. NO MORE CHEVY PRODUCTS.

 

My 17 Tahoe has the same issue. Especially irritating at drive throughs on longer trips with the family. Kids aren't hungry by the time we get the food because it makes them queasy.

Two dealerships have said the same thing to me that yours did to you.

On the positive, trips are cheaper and they kids are eating healthier...