Another oil-burner here with an update. 2009 5.3L AFM. I was burning 1 to 1.5 Q every 1500 miles. Did the oil pan baffle, PCV valve, and piston cleaning fix, still burned oil. Just got it back from the dealer after replacing all pistons/rings and lifters.
I hadn't heard anything like the post above about replacing the engines. Does anyone have an update after piston replacement? Whether it stopped using oil or not? If not, is engine replacement really the next fix?
I'd like to see how my truck runs for awhile, but eventually I'm getting the BB tune and removing AFM.
KCT