GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: When you are performing service on or near the SIR components or the SIR wiring, you must disable the SIR system. Refer to Disabling the SIR System. Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.


    Object Number: 592447  Size: SH
  1. Remove the Auxiliary Blower Motor and IP Support Bracket assembly from the vehicle. Refer to Auxiliary Blower Motor Replacement in Heating, Ventilation and Air Conditioning.
  2. Remove the fasteners (1) from the rear HVAC extension duct (2) in order to remove both halves of the extension duct (2) from the rear HVAC assembly.
  3. Remove both halves of the extension duct (2) from the rear HVAC assembly.

  4. Object Number: 592445  Size: SH
  5. Remove the fasteners (1) which retain the rear HVAC assembly (2) to the center support bracket.

  6. Object Number: 592443  Size: SH
  7. Remove the auxiliary blower motor assembly (1) from the IP center support bracket (2).

  8. Object Number: 592441  Size: SH
  9. Remove the electrical connector (2) from the rear mode actuator.
  10. Remove the three fasteners (1) from the rear mode actuator.

  11. Object Number: 592439  Size: SH
  12. Remove the rear mode actuator (1) from the blower motor assembly (2).

Installation Procedure


    Object Number: 592439  Size: SH
  1. Position the rear mode actuator (1) in place on the rear blower motor assembly (2).

  2. Object Number: 592441  Size: SH
  3. Install the rear mode actuator fasteners (1).
  4. 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.

    Tighten
    Tighten the fasteners (1) to 1.4 N·m (12 lb in).

  5. Connect the rear mode actuator electrical connector (2).

  6. Object Number: 592443  Size: SH
  7. Install the blower motor assembly (1) to the IP center support bracket (2).

  8. Object Number: 592445  Size: SH
  9. Install the fasteners (1) that retain the rear HVAC blower motor assembly (2) to the IP center support bracket.
  10. Tighten
    Torque fasteners to 2 N·m (18 lb in).


    Object Number: 592447  Size: SH
  11. Install both halves of the rear extension duct (2) to the rear HVAC assembly.
  12. Install the fasteners in order to hold the rear extension duct to the rear HVAC assembly.
  13. Tighten
    Torque fasteners to 1.4 N·m (12 lb in).

  14. Install the Auxiliary Blower Motor and IP Center Support Bracket assembly into the vehicle. Refer to Auxiliary Blower Motor Replacement in Heating, Ventilation and Air Conditioning.
  15. Recalibrate the actuators. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.