Shift Interlock: Description and Operation

The brake/shifter interlock system operates as follows:
- All vehicles use a brake shift interlock mechanism consisting of a shift lock actuator attached to the steering column tube.
- This mechanism prevents shifting the transmission out of the PARK position unless the brake pedal is applied.
- When ignition switch is turned to the RUN position, the shift lock actuator is energized, locking shifter in PARK position.
- When brake pedal is applied and the stoplight switch is activated, the brake shift lock actuator is deactivated and the transmission range selector lever can be moved out of the PARK position.