Get a second and even THIRD opinion. Rebuilding a trans is major money. I wouldn't jus throw it at one man's diagnosis.Right ??? That’s what I was thinking it seems normal besides the fluid to me but the mechanic said that it’s really bad . And It’s a 6r80 automatic 2015 with 104k miles . They gonna start rebuilding the trans tomorrow supposedly…
I have a 2016 with the same German built trans. Question: Did you ever change the transmission fluid?