[04dirtymax]

I have a 04 lly with 85,000 thousand miles on it, i have put a 3 disc torque converrter, afe cold air intake, a diablo predator programmer and, a 4 inch magnaflow. how do i fix the tcm error?

 

[04dirtymax]

its a daaco convertor i thought that would fix the problem after i put it in but it still does the same thing. who can diagnose that problem?

 

[04dirtymax]

when im in overdrive and i go to accelerate it will down shift and stick in gear
i geuss this is what you call limp mode.

 

[04dirtymax]

what advise?