Remove the shift lever-to-carrier bolt and nut, but do not drop the shift lever or allow it to hang by the TELEFUNKEN cable; leave the negative cable disconnected from the battery until the transmission control module (TCM) system has been checked and repaired or reprogrammed if necessary. Take off the nut and then raise out the shift lever with the need to disconnect the electrical connector. Third, the bolt must be unscrewed so as to connect to the shift shaft the switch is not needed anymore. Before installing the switch, ensure the switch slot has a screwdriver inserted and turned clockwise until you hear a click this shows that it is on the Neutral position. Slide the switch on the shaft till it is locked in place and tighten the bolt to lock it in position firmly. Last of all, connect the negative-cabled and check that the engine starts only in Neutral or Park.