I am one of the people that reported on another thread that there is a computer reprogram in the works for the 2016. I have gone through 2 02 sensors due to soot covering them and leading to lean conditions in cylinder 1. My fuel trim was at -17 the last time I took it in for th po15b check engine light. I am afraid of piston damage and my service advisor has been great about getting on GM, but I was told at the end of May that they were working on the programming/fix and here we are two months later with no fix.Honestly, they are so new that we don't really know how the long-term reliability for this particular powertrain will pan out - the new small engine family (1.0/1.4T/1.5T) is a clean-sheet redesign. You probably have some of the higher-mileage 2016.5/2017s out there. It's an all-new engine design, and GM seems to be still investigating the cause of the failures. I have heard rumors that there may be a service bulletin or recall for the LE2 engines in the works similar to the Malibu, along with redesigned pistons, but nothing confirmed yet.