TunerPro User Forum

No I haven't. Still having to reset the computer pretty regularly. I did put a new input speed sensor in and it didn't help anything. I have no clue what the problem is but I'm just before buying an aftermarket controller. I'm about to swap a supercharger on the truck and will need a controller anyw...

So you never got a code for the speed sensor? What made you decide to replace that? I noticed something else yesterday. Right before it gives the code the reduce upshft and torque reduction comes on and I can see the force motor current drop to about .2 at the same time which means more line pressure.

I've got a 4L80E in a 95 K2500 that has a tendency to go into limp mode quite regularly. It's so bad that I put a toggle switch on the pcm power wire so I can quickly reset it and clear the code. The code is usually 81 or 82 which is a bad shift valve. It's not bad. When it goes in limp mode it goes...