Customer requests Overdrive Service due to lack of Overdrive on a 2006 5.4L F-150, 4wd, Auto.
This was how I did it and it went smoothly. In hindsight, I could've done it without removing the Valve body cover at the beginning but was unsure which bolts went all the way through to the transmission.
A little note on sizes off the top of my head.. mostly 10mm.
10mm Oil Pan - 2 valve body hold-down bolts - 2 gear position bolts.
8mm on most valve body bolts.
I think the shifter lever was a 15mm.
A pair of needle nose pliers and a small pick.
Not a difficult job as long as you have a little patience and a little preparation.
Good luck and holler in the comments if you've got any questions.