Hombre S Regular Cab 4WD V6-4.3L (1999)
Ignition Switch Lock Cylinder: Description and Operation
Ignition Lock System Description
All vehicles equipped with a column-mounted shift lever contain both mechanical and electrical neutral safety start systems. These systems rely on a
mechanical block as well as an electrical switch in order to prevent starting the engine in any gear other than PARK or NEUTRAL.
The mechanical block is a wedge-shaped lock bolt that is added to the ignition switch actuator rod. In either PARK or NEUTRAL, the following
actions occur:
1. The wedge-shaped lock bolt passes through the slots in the shift bowl.
2. The lock bolt allows the lock cylinder to turn and start the engine.
