4l60e With FTi 4000 Not Locking up!!
Thanks again!!
The HD2 kit involves installing a different TCC valve; perhaps it was done incorrectly.
The main TCC solenoid was also removed/installed; again perhaps done incorrectly or the wires to it broke. (A broken wire might give you a code.)
I assume the converter was ordered with a TCC.
Did you remember to install the o-ring on the input shaft?







