OK here it is! I have a 4l60e with aftermarket stall. I just had the car dynoed and it seems like the lock up is not working. the computer is telling the lock up to take place but it does not seem to be working. Does anyone know how to check this?

Thanks,

 

Send me and email at performabuilt@yahoo.com and he year of your car and ill tell you some quick test to do.