Like title says 5.3 on 4l80e with segment swap under same OS# the transmission goes into gear fine but once it gets warm itll stall when i place it in drive. My reverse works with no problem its just my drive that stalls. I did the vss and iss and repinned the main transmission connector. Now i am getting a p1810 pending history and a 1860 and pending current on my hp tuner scanner. When the transmission does work it runs through gears as it should to include down shift but then after it warms up itll stall at idle in drive. I also dis a tcc lock up test i placed it in drive ( when the torque converter wasnt locked one day) and i manually activated the tcc solenoid and it stalled the engine so it seems that commanding it does work could it be the transmission pressure switch causing the torque converter to lock ?