Shift Interlock: Description and Operation

The brake/shifter interlock system has the following features:
- 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 range selector can be moved out of the PARK position.