GM Service Manual Online
For 1990-2009 cars only

    Object Number: 421398  Size: SH
  1. Slide the windshield wiper and washer switch assembly (1) into the signal switch housing assembly so that the locking tabs snap into place.
  2. Caution: Improper routing of the wire harness assembly may damage the inflatable restraint steering wheel module coil. This may result in a malfunction of the coil, which may cause personal injury.

  3. Connect the connectors to the windshield wiper and washer switch assembly (1).
  4. Install the upper and lower trim covers. Refer to Steering Column Trim Covers - Assemble - Off Vehicle .
  5. Enable the inflatable restraint steering wheel module. Refer to Enabling the SIR System in SIR.