If you listen to bearing noises within the transmission, check the transmission fluid, and see if you can see metallic elements Within the transmission fluid. If you discover metallic sections, They may be likely from the faulty torque converter bearing. A lock-up torque converter features a developed-in locking clutch system. https://torque-converter-clutch70111.blogs100.com/34465342/what-does-torque-converter-clutch-mean