From what I have read is that even the ones that do consume oil, there really isn't any known problems that are caused by it. There is no doubt that oil does go through the intake on some models which is why some people use catch cans and catch oil, but no one that I have seen has actually had any problems caused by the small amount of oil getting through. It certainly doesn't sound like a good thing to happen but I haven't seen any go in and get major work done that is linked to that problem. I am no expert by the way.
What most guys who have had the oil consumption issue report is between 1/2 and 1 quart loss between changes. That really isn't that bad. If you are worried then there are lots of aftermarket catch can systems that you can put on yourself.
I wouldn't stay away from the Chevy because of that worry. Really all of the trucks that are using that style injection are seeing the same thing which is why you see people putting catch cans on their trucks in all makes and models.
I have a 2015 1500 z71 with 86,000 and I love it. It is newer to me but I wish I would have switched over to the Chevy along time ago. I had a 2017 tacoma trd and I couldn't trade that thing in fast enough to get into this z71. Wish I would have skipped the whole toyota thing and went straight to this truck.
Also, if you are looking at Ford's they have some issues too. The ecoboost have carbon problems and the 5.0l has a problem losing coolant at the y pipe. Every engine had some that leave the factory less than perfect.
