GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
  2. Remove the lower center floor air outlet duct.
  3. Remove the upper center floor air outlet duct screws.
  4. Remove the upper center floor air outlet duct.

  5. Object Number: 1203597  Size: SH
  6. Remove the mode actuator screws.

  7. Object Number: 1203571  Size: SH
  8. Remove the mode actuator.
  9. Drill out the mode valve assembly heat stakes.
  10. Remove the valve assembly screws.

  11. Object Number: 1203569  Size: SH

    Notice: Do not tamper, adjust or disassemble the mode valve assembly. The proper setting of the pretensions on the springs is critical to the film valve function.

  12. Remove the valve assembly.

Installation Procedure


    Object Number: 1203569  Size: SH
  1. Install the valve assembly.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the valve assembly screws.
  4. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  5. Install the mode actuator.

  6. Object Number: 1203571  Size: SH
  7. Install the mode actuator screws.
  8. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  9. Install the upper center floor air outlet duct.

  10. Object Number: 1203597  Size: SH
  11. Install the upper center floor air outlet duct screws.
  12. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  13. Install the lower center floor air outlet duct.
  14. Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement .