Quote Originally Posted by GMPX View Post
I just checked and I don't think that OS ever had those preset tables in there. Same applies for all OS's after this one (essentially 2011+), GM changed the strategy (going off memory here) and we never figured it out.
Changing OS's must be done via V8, I don't think V7.5 could ever Full Flash the T43.
We will take at look at those tables again but it probably won't be until next year.
I'm you you on this one. I dont think that os has ever had them mapped.

Im ok now. i just changed what i needed with hpt and use it as base for future vehicles with the same trans os.