The starting system contains both a mechanical and an electrical neutral safety start systems. The systems rely on a mechanical block as well as an electrical switch. The systems prevent starting the engine in any gear other than PARK or NEUTRAL.

The mechanical block is a wedge-shaped lock bolt added to the ignition switch actuator rod.

The wedge-shaped lock bolt passes through the slots in the shift bowl in order to allow the lock cylinder to turn and start the engine in either the PARK or the NEUTRAL position.