Most units use solenoids which can be managed by possibly the motor Manage unit, or a separate transmission Management device. This permits for more precise control of change points, shift excellent, lessen shift instances and guide Manage. 2nd, there isn't a gear shift within an automatic transmission car or truck, https://cruzriten.dailyblogzz.com/34350238/a-simple-key-for-gearbox-auto-unveiled