12 6.7 & 03 6.0
Member
On my 6.0 , mods in sig, having issue w ghead tuning. When first received tunes in both srl+ and extreme, truck was constantly hunting higher gears. I received a revision from them on these two files and srl+ was much better but extreme file at 45mph to 60 truck is very shift happy. Constantly up then down shifting. I have just left in srl tune because I am taking in next week for turbo and injectors. But now I'm worrying that I need to see if just tune issue or could there be something else going on. I had trans rebuilt 5-6k miles ago. Upgraded converter and checked all solenoids then. Has anybody had similar issue? Advice?