this may be out of place but, is the gm 1r09a newer than the 1r09f ? and when i go to click update tool in dsdownloader and nothing is found that mean im up to date?

so i have a question. i drive a 2000 z71 w a 5.3l drop in airaid filter flowmaster duels (not true) airaid spacer (for noise) long story short i had a hypertech

max energy on premium set up on my truck, it was working fine then i

decided to see what the fuss was about so i purchased my friends ...