^the web article was written by AGCO Automotive Repair Service. see link above. the service bulletin from GM was just part of the article.

wala sinabi ang GM na wag magpalit ng ATF. ang sabi ni GM wag gumamit ng external transmission fluid exchange or flush machines or what we call "Dialysis process". replace ATF daw by draining and refilling, following procedure in their SI "Automatic/Manual Transmission Fluid and Filter Replacement".