First, is the transmission exactly the same as the old one? Also, is it doing the same exact thing? The computer is determining that the gear ratio is incorrect for 3 and 4th gear. It could be a mechanical issue within the trans, a fluid issue, a problem with shift solenoids.
If it is doing the same thing as before, I would question the TCM.
Tuesday, December 2nd, 2014 AT 5:24 AM