I want to know if my TCC is bad and need to be replaced or is it the solenoid?

Question

It makes a loud noise like something is dragging or rattling together. Code p0742

Answer 1

P0742 Torque convertor clutch circuit stuck on'

Dragging and rattling noise? what can also cause this code P0742 is a mechancal condition or a hydraulic  condition the rattling noise this more than likely from the torque convertor