Blend Door Replacement

REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

1. Recover refrigerant.
2. Remove and disassemble the HVAC housing.

Fig. 2 Dual Zone HVAC Housing - (Typical Single Zone):

3. Remove the levers from the driver and passenger side blend air doors.
4. Gently slide the drivers or passenger side blend air door toward the out side of the case and tilt and lift the doors out of the case.
5. Inspect doors, seals and case for damage or binding and repair or replace as required.

INSTALLATION

NOTE: Vehicles equipped with single zone HVAC systems will only have one blend air door; dual zone systems have two blend air doors.

1. Place the blend door pivot shafts in to the pivot holes in the bottom of the lower half of the HVAC housing.
2. Blend doors are installed by carefully tipping the doors in and then sliding each door into position.
3. Install blend door levers to each door, position levers so that the doors are able to move smoothly without any binding. Adjust as required to insure proper operation.
4. Check all sealing surfaces and reposition or replace any seals as required.
5. Assemble the HVAC housing.
6. Install the HVAC housing in the vehicle.
7. Run calibration test.