GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the HVAC module. Refer to HVAC Module Assembly Replacement .

  2. Object Number: 888407  Size: SH
  3. Remove all retaining screws from the HVAC module case halves (1, 4).
  4. Separate the HVAC module case (1, 4).
  5. Remove the screws from the mode door actuator.
  6. Remove the actuator.
  7. Remove the defrost door linkage from the defrost door.

  8. Object Number: 888411  Size: SH
  9. Remove the defroster door (1) from the HVAC module assembly (2).

Installation Procedure


    Object Number: 888411  Size: SH
  1. Install the defroster door (1) from the HVAC module assembly (2).
  2. Install the defrost door linkage from the defrost door.
  3. Install the mode cam.
  4. Install the actuator.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the screw to mode cam flat pack motor.
  7. Tighten
    Tighten the screw to 1.9 N·m (17 lb in).


    Object Number: 888407  Size: SH
  8. Assemble the HVAC module case (1, 4).
  9. Install the screws to the HVAC module case.
  10. Tighten
    Tighten the screws to 1.9 N·m (17 lb in).

  11. Install the HVAC module. Refer to HVAC Module Assembly Replacement .