Tcm support 2012 silverado

[Springer03]

I have a 2012 silverado. Recently installed the trinity tuner and im happy with it but i thought i would be able to change the tranny tune as well as the engine tune other than seeing a bunch of shift pressure options that i dont understand i see no options for tweaking the way the transmission shift. It also says tcm not supported

[mikel]

shift pressure options are what you adjust to change how it shifts....if its unsupported select the modify stock tcm tune and let it read the file out and export it to a pc using dsdownloader and post the file here or email it to us so we can add support for it.

[06MonteSS]

restore original backup stock tune to truck..

then go through it again and select/install the ECM engine tune to install, and this time around it should also ask you to select a TCM tranny tune to install..