GM Service Manual Online
For 1990-2009 cars only

Assembly Procedure

Tools Required

    • J 42640 Steering Column Anti Rotation Pin
    • J 41352 Modular Column Holding Fixture

    Object Number: 393978  Size: SH
  1. Install the dimmer switch assembly (3) to the ignition switch assembly (4).
  2. Install the hexagon washer head tapping screw (1) to the dimmer switch assembly (3).
  3. Tighten the hexagon washer head tapping screw (1) finger tight.
  4. Install the washer head screw (2) to the dimmer switch assembly (3).
  5. Tighten the washer head screw (2) finger tight.
  6. Insert the dimmer switch rod into the slot on the dimmer switch assembly (3).

  7. Object Number: 358700  Size: SH
  8. Adjust the dimmer switch assembly (1) following these steps:
  9. 7.1. Install a 3/32 inch drill bit into the hole (1) on the dimmer switch assembly to limit travel.
    7.2. Position the dimmer switch assembly onto the column and push it against the dimmer switch actuator rod to remove all the lash.
    7.3. Remove the drill bit.

    Object Number: 393978  Size: SH
  10. Tighten the hexagon washer head screw (1).
  11. Tighten
    Tighten the hexagon washer head screw to 2.5 N·m (22 lb in).

  12. Tighten the washer head screw (2).
  13. Tighten
    Tighten the washer head screw to 4 N·m (35 lb in).

  14. Insert the vehicle wire harness into the dimmer switch assembly (3).
  15. Remove the steering column and J 41352 from the vise.
  16. Remove J 42640 from the column.