Ignition Switch
WARNING: This page does not describe the selected car, but rather 41 other vehicles, including the 1985 Pontiac Sunbird, 1985 Pontiac Parisienne, 1985 Pontiac Grand Prix, 1985 Pontiac Grand Am, and 1985 Pontiac Firebird. However, it is still accessible from the selected car via links, so may be relevant.
Sliding type switch mounted on steering column and controlled by an actuating rod which is operated by lock cylinder through a rack-and-sector mechanism. Up and down movement of actuator moves switch slider back and forth within switch housing, establishing various switch positions.