working on an LS swap in a 69 camaro. Had a PCM from a 09 express van 2500 as well as an unknown junk yard T42 TCM. after trying to change the trans values for several hours I could not get it to take changes. As soon as the car would move about 30 feet the trans was already in 4th gear with the converter locked. I assumed the TCM was for a 4L60E and attempted to write an entire 2008 van 2500 file to the ECM and TCM and ended up bricking the PCM. I downloaded several files from the repository and none of them would allow a TCM segment swap thats why I went ahead with the write entire. I'm now out the cost of another PCM and credits for it.
I've done a bunch of GEN3 LS swaps but this is my first time dealing with a GEN 4 swap. What pcm/tcm is needed to make this swap function and shift right. I'm already loosing money on this swap I'm ready for it to be gone.