To have the transmission into overdrive, many points have to be linked and disconnected by clutches and bands. The Earth provider gets linked to the torque converter housing by a clutch. The compact Sunlight receives disconnected with the turbine by a clutch to make sure that it can freewheel. From https://griffincczxt.weblogco.com/33909849/new-step-by-step-map-for-gearbox-auto