Shift Interlock: Description and Operation

The shift interlock system prevents movement of the gearshift lever from the PARK position with the ignition switch placed in the RUN position until the service brake pedal is actuated or until vehicle power is interrupted. The shift lock actuator is part of the shift interlock system and is mounted at the base of the steering column tube. It engages the transmission shift selector position insert to lock the transmission column shift selector tube and gearshift lever.