thanks mike that got me fixed up

How are u guy making it on this my truck misses the power

wonder about how long that might take

Dealer installed a trans update to resolve shutter issue and now I am unable to tune with iTune

Copy of files you requested on other posts attached

This for a 2015 Sierra 1500 with 6.2L 8 speed

I put the trans tune in mine on firm did good about 300 miles then picked up a awfull trans toqure converter shudder what the heck is this

I need more info on just how to do that please

I sent it over a week ago here it is again

i sent in my tcm file and I haven't heard anything back and idea when might be a fix for these certain tcm

toneyjay did they do just converter or it and trans?

ok 06MonteSS I got it done and emailed thanks waiting to here back

does anyone know if this helps the toqure converter shudder these 8 speeds have? or at least some of them have and mine is one lol

On my 2015 gmc truck with 6.2 8 speed it just read the tcm then said to send to diablosport how do I do that ?