No AFM on the earlier models. My pop has a 2008 with the 5.3 with AFM. It’s been turned off since like 30-40K. He runs Redline 5W30 in it too. I absolutely hate the newer models. Had two of them that were real POS.What an.........interesting decision. I got so pi$$ed @ GM I never went back after 2012. My 5.3L was one of the AFM oil-burners.
By the way I saw this at the gas station this morning. Gave me a good laugh. Now I’ll probably get banned from the forum, lol.