Hello Nisanda,

I have used the .cal file you have uploaded for me "2001 Truck 5.7 L31 4l60e 4x2.cal" in post 57 of this thread, and i have installed a new 4L60E transmission id: 8KCD283L 20820533. Well i bumped in to a problem that my 0411 pcm doesn't seem to recognize the transmission, i have faults all over, the pwr TCC, the tcc, and oll of the solenoids that the pcm does not see, so the transmission is in the Limp mode. I have contacted the transmission guru, who rebuild my transmission, and checked all of the solenoids, all work fine, have checked the wiring that goes from the PCM to the transmission, it is all good, normally the pcm should see everything, but it doesn't, the transmission guru as well does not know why it seems not to work, he advised me to look at the firmware of the pcm, i did not find anything criminal there. May be you have some clue on my issue.

Thank you in advance.