GM Service Manual Online
For 1990-2009 cars only

The locking energy-absorbing tilt steering column includes the following three functions in addition to the steering function:

  1. In a front-end collision, the column is designed to collapse in order to minimize driver injury.
  2. The ignition switch, the steering column lock, and the ignition cylinder are column mounted, allowing the steering wheel and the ignition to be locked, minimizing the chance of vehicle theft.
  3. The steering column lever controls the turn signal, the headlamp dimmer switch, the cruise control system, and the windshield wiper/washer system.

In order to ensure the energy-absorbing action, use only the specified bolts and nuts and tighten to the specified torque. Apply a thin layer of grease to all friction points during assembly. Carefully handle the column during removal. Using a steering wheel puller other than the recommended, or dropping/striking/leaning on the column, can shear or loosen the plastic fasteners that keep the column rigid.