GM is notorious for faulty crap and knowing it and not providing the right repair.
I can recall that a lot of their engines had bad head gaskets, My first experience was with my '97 venture minivan in '97 and it was covered in warranty, but those gaskets failed two more times after that. My wife had an '03 Malibu that had the same head gasket fails.
https://www.google.com/search?newwindow=1&client=firefox-b-1-d&q=gm+3.8+head+gasket+problems&sa=X&ved=2ahUKEwjLhM_s9tLhAhUR7awKHbZ0CgEQ1QIoAHoECAoQAQ&biw=1152&bih=609
It's one of the reasons I decided to drive a Honda after owning a new Chrysler 200 in 2012... that thing started falling apart after 3 yrs, I'm glad it got totaled it out in 2015. The U.S. auto manufactures produce **** for cars today and that's the reason they are losing the market