I saw that TSB for the reflash but it said nothing about issues of clunking when going into drive. It talked about harsh up shifts which I don’t have. Also since I have Cobb tune and intake that will throw CEL without tune, then I don’t wanna take it in for a possible fix, I was asking if anyone else has had this clunking when going into drive or reverse or during down shifts.
Reading thoroughly is obviously not you friend, but thanks for the suggestions.
“Reading thoroughly is obviously not your friend, but thanks for the suggestions.”
(Fixed)
It seems reading thoroughly may not be your friend either, since the TSB he is referring to (18-2274) clearly states: “Some 2018 F-150 vehicles equipped with a 2.7L, 3.5L or 5.0L engine and 10R80 automatic transmission and built on or before 15-May 2018 may exhibit harsh/bumpy upshift, downshift and/or engagement concerns.” Again, HARSH/BUMPY UPSHIFT, DOWNSHIFT AND/OR ENGAGEMENT CONCERNS. The TSB does state some 2018 F150s, but it also includes 2017 F150s. Really, any that are built on or before the 15th of May 2018 and have the 10 speed transmission.
For your awareness, you literally said in your first post, “it’s the downshifting and D/R engagement.”
Just because the answer you got, isn’t the one you want, doesn’t make it incorrect and in this case, it’s most likely the fix to your problems.
He pointed you in the right direction. Goodluck