There's no equipment change within an automatic transmission automobile. As soon as you put the transmission into push, almost everything else is automatic. Generally, the automatic gearbox uses a roller clutch for schedule upshifts/downshifts. It operates the same as a ratchet. It transmits the torque only in a single way https://gearboxauto52951.mybjjblog.com/the-ultimate-guide-to-gearbox-auto-46473837