GM Service Manual Online
For 1990-2009 cars only

Standard Steering Wheel and Column -- Disassembled View


Object Number: 491601  Size: LF
(1)Steering Shaft Coupling Bolt
(2)Lower Steering Shaft
(3)Steering Shaft Coupling Bolts
(4)Steering Shaft Coupling
(5)Steering Shaft Seal
(6)Steering Shaft Seal Bolts
(7)Steering Column
(8)Steering Column Bracket Bolt
(9)Steering Column Lock and Ignition Switch Cylinder
(10)Steering Column Bracket Bolt
(11)Turn Signal and Headlamp and Windshield Wiper and Windshield Washer Switch with Levers and Inflatable Restraint Steering Wheel Module Coil
(12)Turn Signal Base Bolts
(12)Turn Signal Base Bolts
(13)Steering Column Upper Trim Cover
(14)Steering Column Lower Trim Cover
(15)Steering Column Lower Trim Cover Bolts
(16)Steering Wheel
(17)Steering Wheel Nut
(18)Inflatable Restraint Steering Wheel Module
(19)Inflatable Restraint Steering Wheel Module Bolt
(19)Inflatable Restraint Steering Wheel Module Bolt
(20)Steering Wheel Opening Cover
(20)Steering Wheel Opening Cover
(21)IP Steering Column Opening Trim Plate
(22)IP Steering Column Opening Trim Plate Screws

The double tube type steering column includes the following three functions in addition to the steering function:

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

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.


Object Number: 464178  Size: SH

The turn signal and headlamp and windshield wiper and windshield washer switch with levers and the inflatable restraint steering wheel module coil can be serviced as a unit. The switch consists of the following components:

    • The turn signal switch (6)
    • The headlamp switch (6)
    • The headlamp dimmer switch (6)
    • The windshield wiper switch (3)
    • The windshield washer switch (3)
    • The cruise control switch (3), if equipped
    • The steering wheel inflatable restraint steering wheel module coil (2)
    • The turn signal switch base