Whats the chances of you making a Predator Tuner for the FOZ to squeeze some more performance from the normally aspirated 2.5L boxer engine..

I have a 2005 silverado ext cab and I have the shift pressure turned up +10% for all shifts part throttle and WOT.... Shift Timing -10% for all shifts too, and have been running this for over 2 yrs with no adverse affects. I also have all 3 torque management settings turned off.. Just drive it ...

Lyle are the fluid levels ok in the transmission ? When was the last time your tranny filter and fluid were changed? Sparatic shifting probs could be a sign that things in the tranny like shift solenoids are maybe gummed up.

Hey Devilish sorry to hear your still having problems Did you try the settings I gave you over at CTW?? I dont see them in the thread so ill repeat them for you .... for a tire 12.5 x 34.8 x 18 use 317/67/18 for 12.5x35x18 try 317/68/18 Im pretty sure you have to enter the info into the predator in ...