I am swapping the gears in my truck from 3.42's to 4.10s, but cannot seem to find a dealership that can correct the programming changes, and HPT doesn't provide the fields in the GUI for my platform. After reading various threads, I found a suggestion that if I do a read/write of the full PCM, HPT will in fact copy the data I need to make the correction...

Can anyone provide a file for an entire read? It must be from a 2002-2005 Trailblazer with 4.10 gears and an I6 engine. I don't know if it matters, but I also have 4WD.

I believe if I write the full file to my PCM, I can then write the correct VIN and copy my custom tables, which should put my system back to a tuned state with the corrected gear ratio. Sounds good in theory anyway?