In this video, i teardown down a 4T60E trans that was not moving cold and when it did move runaway on the 1-2 shift. On this trans, also the 4T60 and 4T65E the input clutch and sprag are on in forward and reverse. The 2nd clutch is the driving clutch in these units which means without 2nd you have no 3rd or 4th gear. Thanks for watching.