[rhaigh08]

If I remember right when my 99 3.5L was diagnosed with the slight oil consumption at about 30k miles almost 9 yrs ago. We were told by GM it was the piston rings and, some rear lower seal or something along those lines and, one other seal or gasket somewhere that GM had claimed was another common problem. They offered to replace the engine under warranty we declined and havent regretted it. The car has beyond served its purpose. 120k miles later She is just now starting to fall apart mostly suspension issues. But still runs strong it has since the diagnosing 9 yrs ago slowly started burning more oil. Not a big deal as long as it gets checked at least weekly and added as needed. On this forum somewhere I've read about all the possibilitys but quite some time ago.