Are you talking about the TCI shifter for the 05-10 automatics ??
I had two brand new ones from AM..and both were a major PITA ! One day I came out of 711....and it would not come out of...'park'. I had to do the manual over ride.
Then the SJB ( smart junction box) in my 2010 stang was replaced..3 times. Then the local ford tech and myself finally figured it all out. The TCI shifter would put out a transient /surge /spike towards the SJB....and lock it up... then have to manually depress the white nylon to get the tranny outa park. The ford tech did a master re-set on the SJB...and all was well......for a week. Then I get yet another spike from tci into the SJB, locking it up again.
Returned a total of two brand new TCI shifter's to AM. That was the worst cluster I have ever had with the car. OEM shifter back in. I would avoid the TCI like the plague. It really buys you nothing anyway...EXCEPT that u can manually shift anywhere from 1-4. With oem shifter u can manually shift anywhere from 1-3 ( u have to depress side button to get it outa Drive). For drag racing it shifts faster just using Drive.
IF you use the tci...and say in 2nd gear..and WOT....then shift into 3rd at say 4 k rpm....it WON'T go into 3rd. It will wind out to 6 krpm,, THEN shift into 3rd. Ditto with a 1-2 shift or 2-3, or 3-4.
Toss the tci into the trash...it's junk. TCI's 5r55 isn't much better, too many horror stories.