I'm having to do oil consumption tests as my 2014 was giving me a low oil light only 2,000 miles after the oil change. I'm not sure if 6qt or 8qt were added which could be the issue, but if not I'll get back to this post. My truck only has 26,000 miles on it so obviously it should not be burning oil. However, GM has said that the direct injection motors will burn up to I believe 1qt every 3,000 miles naturally?
Also There was a recall on an oil cooler line a while back, but I've already had this checked.
I've also disabled my afm with a range device so that nothing gums up while I still keep my warranty. I have the 5.3L V8 ecotec.