Gm 2.9/auto Repository?

Looking in the online repository showed only two stock files for a 2008 Colorado with the automatic transmission. Looked under Canyon, nothing was uploaded.

Do we have anything of good use for a tune hidden somewhere?


Looking to remove the slop slush box up shifting and make the kick down shift engagement quicker, not necessarily firmer. Should a tune already exist that would give those changes and possibly any engine enhancements, please post your findings.
Short of going thru the parameters to make changes, figured the pros would have established a baseline tune for flashing and if anything more is desired, I could tweak it as I see it fit.

Thank you.

??? any input?