GM Service Manual Online
For 1990-2009 cars only

Windshield Wiper and Washer Switch Assembly - Assemble - Off Vehicle Column Shift

Assembly Procedure


    Object Number: 387425  Size: SH
  1. Push the pivot and pulse dimmer switch connector through the lock housing cover and sleeve assembly (5).
  2. Important: Use care to not damage the wires as they are pushed through the lock housing cover and sleeve assembly (5).

  3. If the pivot and pulse dimmer switch assembly (3) was left hanging skip the next step.
  4. Install the pivot and pulse dimmer switch assembly (3) to the lock housing cover and sleeve assembly (5) following these steps:
  5. 3.1. Install the wire harness clamp (4) to the tab inside the lock housing cover and sleeve assembly (5).
    3.2. Snap the switch body into the upper wing (7) and the lower wing (6).
    3.3. Install the dimmer switch component to the lock housing cover and sleeve assembly (5).
    3.4. Install the pivot and pulse dimmer switch connector to the bulkhead connector.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the flat head screw (2) into the pivot and pulse dimmer switch assembly (3).
  7. Tighten
    Tighten the flat head screw to 2 N·m (18 lb in).

  8. Install the round washer head screw (1) into the pivot and pulse dimmer switch assembly (3).
  9. Tighten
    Tighten the round washer head screw to 3 N·m (27 lb in).


    Object Number: 387422  Size: SH
  10. Install the housing cover end cap (1) to the lock housing cover and sleeve assembly (2) following these steps:
  11. 6.1. Align the housing cover end cap (1) to the lock housing cover and sleeve assembly (2).
    6.2. Push the top and the bottom edges of the housing cover end cap (1) into the slots in the lock housing cover and sleeve assembly (2).
  12. Install the turn signal cancel cam assembly. Refer to Turn Signal Cancel Cam and Upper Bearing Inner Race - Assemble - Off Vehicle .