Good morning, hoping to get my issue resolved in regards to the torque converter lock up issue im having. I have a 2002 4l80e recently rebuilt with new steels clutches etc i did not do the internal dual feed but i installed the hd2 shift kit with the three plate seperator, did not drill the valve body for the pressure relief instead i installed the sonnax reverse boost valve to relieve the pressure as many have said to do and i did not drill the pump as per their instructions as some said it wasnt necessary. while at a stand still (parked) in 2nd gear i can command the tcc lock to engage via hp tuners but the torque converter will not lock up. The hp tuners has four options on there pmw tcc on or off, force motor on , tcc selenoid on or off, and tcc on or off . well when im second gear (parked) the pwm tcc on off button does not function when i press the on button but instead it makes the tcc selenoid click when i press the off button im not sure why. Another thing is that when it does click there is no lock up but if i gently press on the gas it will lock up same thing if i were to press the other tcc buttons on or off. Another thing is that if i place it in 2nd gear (parked) i can command tcc lock up through hp tuners and nothing will happen but if i turn on the force motor option i can hear hissing sound coming from the transmission then instantly i get lock up. when driving, once i get to around steady 50 mph itll take roughly 5 seconds for the torque converter to lock up for like 5-10 seconds then unlock. I can see the pcm commanding lock up even tho the torque converter has unlocked. I placed a light bulb on the negative ground coming from the pcm to make sure it was grounding as it should and it does its just that the torque converter in park tcc on option via hp tuners....does not lock unless i turn on the force motor in 2nd gear. while driving the torque converter only locks for a few seconds then unlocks while the pcm is still commanding lock up. I am not sure if the hd2 triple plate with the sonnax valve is having a ill effect not allowing it to build pressure so to rule out the valve body i purchased a new valve body with all new sensors and wire harness all seems to be working well 1-4 gears smooth no issues. I am wondering if its pressure related and if the sonaxx line to lube will help im not sure. I attached the tune maybe someone can look at it and help me figure it out.
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