GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the lower instrument panel (I/P) trim panel. Refer to Instrument Panel Lower Trim Panel Replacement in Instrument Panel, Gages and Console.

  2. Object Number: 645392  Size: SH
  3. Remove the fasteners (2) securing the heater air conditioning (A/C) duct.
  4. Move the heater A/C duct aside in order to gain access to the panel dimming control module bracket.

  5. Object Number: 645110  Size: SH
  6. Disconnect the electrical connectors from the lamp control module (2) and remove the module.

Installation Procedure


    Object Number: 645110  Size: SH
  1. Connect the electrical connectors to the lamp control module (2).
  2. Install the lamp control module to the instrument panel bracket (2).

  3. Object Number: 645392  Size: SH
  4. Reposition the heater A/C duct.
  5. Install the fasteners (2) securing the heater A/C duct.
  6. Install the lower I/P trim panel. Refer to Instrument Panel Lower Trim Panel Replacement in Instrument Panel, Gages and Console.
  7. The module programming or setup are not necessary.