I have a '08 6L90 out of a truck that doesn't support hardwire TUTD. Want to flash the TECM with an OS/Calibration that supports it and am unsure how to know what's compatible! Can I write entire with HPT and try some other operating systems or do I run the risk of bricking it and having to pull the trans apart? Any help in figuring out the compatability matrix is much appreciated!
Also have a passthru that I could try to flash it with if HPT won't do it. I couldn't find any reliable details on which was required for this task.
Attached a PDF showing the current calibration details and Operating System.