Question about 2003 Mercury Grand Marquis

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I need to install an air door actuator. How do I go about doing this?

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Here's instructions for replacing the actuator. Before servicing the vehicle, refer to the Precautions section. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection. Remove the instrument panel. Disconnect the electrical connector from the blend door motor/actuator. Remove the four screws holding the blend door actuator to the plenum. Remove the temperature blend door actuator. Fig. Blend door actuator electrical connector Fig. Blend door actuator mounting to plenum To install: Installation is reverse of removal.

Posted on Jul 07, 2010

  • rickjack Jul 10, 2010

    OK... obviously you are copying this from a service manual. First, I don't know how to take apart the instrument panel, Second, I don't know what I am looking for when you refer to the "Blend door actuator". Next I don't know what the Temperature Blend door actuator looks like. The manual you are copying from obviously has photos or figures showing these parts. You don't include this information. Am I supposed to just guess at this? Maybe I am expecting too much from this service but this doesn't put me any closer to the solution than I was wnen I signed up.




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2 Answers

Air blend actuator 2000 ford explorer is not working?


First, insure you do not have a vacuum leak or bad vacuum check valve. If this is all good, you may have to change actuator and every model has a different way to access this--some require dash removal. If you must do this, get a shop manual as the air bags CAN BE VERY DANGEROUS!

Mar 28, 2016 | 2000 Ford Explorer Eddie Bauer

1 Answer

My 2004 Avalanche ' heating system will not heat. No matter what the setting it either blows no air or cold air and it is 25 degrees outside so this is a problem. The engine is up to temp and I have tried...


The most likely cause is a failed blend door actuator; however I recommend a little troubleshooting. First, can you hear a clicking sound behind the dash when you turn the setting to hot? If yes, it is certainly the actuator stripping its gears. If not, check to make sure the heater hoses are both hot as they connect to the heater core at the firewall (in the engine compartment). If one or both of the hoses do not get hot, there is a blockage caused either by an air bubble or a stuck water control valve in the heater hose. If the hoses are both hot, the indication is again the blend door actuator.

Below are instructions for replacing the actuator. Look at the diagrams carefully--the big arrows point to the front of the truck and the actuator is on the side of the heater box above the outlet duct that runs to the driver's side of the floor. Also, the actuator is expensive, so I recommend you make sure it's bad and shop around a bit to get a good price. To check out the actuator, first see if you can turn the blend door by hand. If you can't turn it, maybe it's jammed. Also, reconnect the actuator after removing it and see what it does when you turn the heater to hot.

Removal & Installation
  1. Remove the floor air outlet duct extension (1) from the floor duct (2).

    jturcotte_393.gif

Fig. Remove the floor air outlet duct extension (1) from the floor duct (2)


Disconnect the electrical connection at the blend door actuator (#10 in pic below). jturcotte_394.gif

Fig. Blend door actuator and related components


Remove the blend door actuator mounting screws from the HVAC module.


Remove the blend door actuator as an assembly with the actuator cam.
jturcotte_396.gif

Fig. Remove the blend door actuator mounting screws from the HVAC module



To install:

  1. Install the blend door actuator as an assembly with the actuator cam.
    1. Line up the heater/defroster valve lever with the blend door actuator cam slot.
    2. Line up the A/C valve lever with the blend door actuator cam

  2. Install the blend door actuator mounting screw to the HVAC module.
    1. Tighten the blend door actuator mounting screw to 14 inch lbs. (1.6 Nm).

  3. Connect the electrical connection at the blend door actuator (10).
  4. Install the floor air outlet duct extension (1) to the floor air duct (2).


Picture of actuator:


jturcotte_57.jpg

Dec 07, 2010 | 2004 Chevrolet Avalanche

1 Answer

Only cold air is available, what can I do to fix the blend door temporarily


I would repair the problem if I have to disassemble the varioius parts to get at the air doors --- In-Vehicle Temperature Sensor Removal & Installation To Remove:
In-vehicle temperature sensor ford-10-00-433.gif

  1. Remove the climate control head.
  2. While pressing the retaining tabs inward, remove the in-car temperature sensor.
To Install:
  1. While pressing the retaining tabs inward, install the in-car temperature sensor.
  2. Install the climate control head.
---
Air Door Actuators/Motors Removal & Installation Air Inlet Door (Recirculation) Vacuum Motor To Remove:
  1. Remove the instrument panel.
  2. Remove the air inlet door motor mounting screws. CAUTION
    Do not attempt to bend any part of the air inlet duct door lever.
  3. Rotate and remove the air inlet door vacuum control motor.
To Install:
  1. Rotate and install the air inlet door vacuum control motor.
  2. Install and tighten the mounting screws.
  3. Install the instrument panel.
Defroster Door Vacuum Motor To Remove:
  1. Remove the passenger air bag module from the instrument panel.
  2. Disconnect the vacuum line and remove the mounting screws. CAUTION
    Do not attempt to bend any part of the defroster airflow mode door lever.
  3. Rotate and remove the vacuum control motor from the defrost door lever.
To Install:
  1. Rotate and install the vacuum control motor on the defrost door lever.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum line to the vacuum control motor.
  4. Install the passenger's air bag module.
Floor Console Register Duct Vacuum Motor To Remove:
  1. Remove the floor console.
  2. Remove the right-side instrument panel insulator.
  3. Working from the passenger's footwell, disconnect the vacuum hose.
  4. Remove the screws and the floor console register duct vacuum control motor. CAUTION
    Do not attempt to bend any part of the floor console register duct door lever.
  5. Rotate and remove the vacuum control motor from the floor console register duct door.
To Install:
  1. Rotate and install the vacuum control motor onto the floor console register duct door.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum hose to the floor console register duct vacuum control motor.
  4. Install the insulator under the dash.
  5. Install the floor console.
Panel/Floor (Heater Air Damper) Door Vacuum Motor To Remove:
Panel/floor door vacuum control motor shield ford-10-00-403.gif

  1. Working through the driver footwell, remove the two screws and the shield. CAUTION
    Do not attempt to bend any part of the airflow mode door lever.
  2. Label and disconnect the two vacuum hoses.
  3. Remove the vacuum control motor mounting screws.
  4. Lift, rotate and remove the panel/floor (heater air damper) door vacuum control motor from the door lever.
To Install:
  1. Install the panel/floor (heater air damper) door vacuum control motor on the door lever.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum hoses in their original positions.
  4. Install the shield on the vacuum motor.
Temperature Blend Door Actuator To Remove:
  1. Remove the integrated control panel.
  2. Remove the right-side lower instrument panel insulator.
  3. Lower the glove compartment.
  4. If equipped with Electronic Automatic Temperature Control (EATC), remove the 2 remote climate control module screws and position the module aside.
  5. Remove the temperature blend door linkage shield.
  6. Disconnect the temperature blend door electrical connector.
  7. Remove the temperature blend door actuator mounting screws.
  8. Remove the temperature blend door actuator.
To Install:
  1. Position the temperature blend door actuator on the plenum.
  2. Install the temperature blend door actuator mounting screws.
  3. Connect the temperature blend door electrical connector.
  4. Install the temperature blend door linkage shield.
  5. If equipped with Electronic Automatic Temperature Control (EATC), reposition the remote climate control module and install the 2 mounting screws.
  6. Raise the glove compartment.
  7. Install the right-side lower instrument panel insulator.
  8. Install the integrated control panel.
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Nov 05, 2010 | 2000 Ford Taurus

2 Answers

My heater doesnt blow hot air when i turn the heat on it is cold. when i change the knob from hot to cold there is do difference. also my temp gauge stays where it needs t be right in the middle. help i...


Suspect it is the blend door actuator, but please see my tip at http://www.fixya.com/cars/r6235876-no_heat_fan_blowing_cold_air . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info. Below are instructions for replacing the blend door actuator, but don't replace it unless you're sure it's bad. Autozone has it for $36. First, take it out, plug the connector back in and see if it turns when you change the temperature control. If not, the problem can be in the controller or the actuator. If it is clicking, the problem is stripped gears. If it isn't doing anything, you can check for voltage at the connector with a voltmeter. Connect the black meter lead to a good ground point and probe the connector terminals with the red lead while changing the temperature setting.


Blend door actuator removal and installation:

  • Remove the fuse labeled HVAC CTRL (BATT).
  • Remove the left closeout panel.
  • Remove the knee bolster.
  • Remove the air temperature actuator screws.
  • Remove the air temperature actuator.
  • Remove the air temperature actuator wire harness connector.

    d02fb36.gif


  • Fig. Air temperature actuator removal
    To install:

    1. Install the air temperature actuator wire harness connector.
    2. Install the air temperature actuator and tighten the mounting screws to 13 inch. lbs. (1.5 Nm).
    3. Install the knee bolster
    4. Install the left closeout panel.
    5. Install the fuse labeled HVAC CTRL (BATT).

    Oct 31, 2010 | 2004 Chevrolet Malibu

    1 Answer

    The heat in my 2006 grand prix will not get hot. We replaced the thermostat and got nothing. So I got the radiator flush and force filled again. Still nothing. Temp of the motor still gets to the middle,...


    Are the 2 tubes that go to the heater core getting hot? If so, then the blend door is not opening to allow heat to get to the cabin.

    Possible vacuum motor problem, either disconnected, or the controller for the blend door is broken is likely problem.

    Troubleshooting by Symptom Poor Heater System Performance CAUTION
    Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.
    1. Start the engine.
    2. Idle the engine until the thermostat opens (upper radiator hose will be hot) Is the engine at normal operating temperature (approx. 200° F)? If yes, go to the next step. If no, go to step 16.
    3. Set the mode selector to FLOOR mode.
    4. Set the heater control selector to the warmest temperature setting.
    5. Set the blower speed the lowest setting.
    6. Carefully feel the inlet and outlet heater hoses at the heater core. Is the inlet heater hose significantly hotter than the outlet heater hose? If yes, go to step 14. If no, go to the next step.
    7. Set the mode selector to PANEL mode.
    8. Select the maximum blower speed.
    9. Select the warmest temperature setting.
    10. Place a thermometer into the center I/P PANEL air outlet and affix a second thermometer to the heater core outlet heater hose.
    11. Record the temperature at the center I/P PANEL air outlet and at the heater core outlet heater hose. Are the two temperature readings about equal? If yes, go to the next step. If no, go to step 13.
    12. Inspect and repair the cowl, cowl area, recirculation door, and the HVAC evaporator/heater core case for cold air leaks. Repair any problems found, go to step 17.
    13. Inspect the temperature door operation. Repair any problems found, go to step 17.
    14. Turn OFF the engine. Back-flush the heater core. Start the engine. Select the FLOOR mode and the lowest blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Is the inlet heater hose feel significantly hotter than the outlet heater hose? If yes, go to the next step. If no, go to step 17.
    15. Replace the heater core. When the repair is completed, go to step 17.
    16. Check for low engine temperature problems, Repair or replace as needed, go to step 17.
    17. Operate the system in order to verify the repair. If the system operates properly, the repair is complete. If the heater still does not work properly, repeat the entire procedure.
    Air Door Actuators/Motors Removal & Installation Recirculation Actuator To Remove:
    1. Remove the right lower instrument panel (I/P) insulator.
    2. Remove the glove box assembly. Recirculation actuator (Typical) gm-10-00-3695.gif

    3. Remove the mounting screws and recirculation actuator from the HVAC module assembly.
    4. Disconnect the recirculation actuator harness connector.
    To Install:
    1. Align the recirculation actuator slots with the flats on the actuator door shaft.
    2. Install and secure the recirculation actuator on the HVAC module assembly with the mounting screws.
    3. Connect the recirculation actuator harness connector.
    4. Install the glove box assembly.
    5. Install the right lower I/P insulator.
    6. Calibrate the recirculation actuator.
    Mode Actuator To Remove:
    1. Remove the right lower instrument panel (I/P) insulator.
    2. Remove the glove box assembly. Mode actuator gm-10-00-4356.gif

    3. Remove the mounting screws and mode actuator from the HVAC module assembly.
    4. Disconnect the mode actuator harness connector.
    To Install:
    1. Align the mode actuator slots with the flats on the actuator door shaft.
    2. Install and secure the mode actuator on the HVAC module assembly with the mounting screws.
    3. Connect the mode actuator harness connector.
    4. Install the glove box assembly.
    5. Install the right lower I/P insulator.
    6. Calibrate the mode actuator.
    Air Temperature Actuator Right Side To Remove:
    1. Remove the right lower instrument panel (I/P) insulator.
    2. Remove the glove box assembly. Air temperature actuator (right side) gm-10-00-4356.gif

    3. Remove the mounting screws and right air temperature actuator from the HVAC module assembly.
    4. Disconnect the right air temperature actuator harness connector.
    To Install:
    1. Align the right air temperature actuator slots with the flats on the actuator door shaft.
    2. Install and secure the right air temperature actuator on the HVAC module assembly with the mounting screws.
    3. Connect the right air temperature actuator harness connector.
    4. Install the glove box assembly.
    5. Install the right lower I/P insulator.
    6. Calibrate the mode actuator.
    Left Side To Remove:
    1. Remove the left lower instrument panel (I/P) insulator. Air temperature actuator (left side) gm-10-00-4357.gif

    2. Remove the mounting screws and left air temperature actuator from the HVAC module assembly.
    3. Disconnect the left air temperature actuator harness connector.
    To Install:
    1. Align the left air temperature actuator slots with the flats on the actuator door shaft.
    2. Install and secure the left air temperature actuator on the HVAC module assembly with the mounting screws.
    3. Connect the left air temperature actuator harness connector.
    4. Install the left lower I/P insulator.
    5. Calibrate the mode actuator.

    Oct 18, 2010 | 2006 Pontiac Grand Prix

    2 Answers

    When I turn the heat on the drivers side only kicks out cold air while the passenger side kicks out hot air...


    The blend door is not working right or the in car air temperature sensor is faulty.
    Removal & Installation Air Inlet Door Vacuum Motor To Remove:
    1. Remove the instrument panel.
    2. Remove the air inlet door motor mounting screws. CAUTION
      Do not attempt to bend any part of the air inlet duct door lever.
    3. Rotate and remove the air inlet door vacuum control motor.
    To Install:
    1. Rotate and install the air inlet door vacuum control motor.
    2. Install and tighten the mounting screws.
    3. Install the instrument panel.
    Defroster Door Vacuum Motor To Remove:
    1. Remove the passenger air bag module from the instrument panel.
    2. Disconnect the vacuum line and remove the mounting screws. CAUTION
      Do not attempt to bend any part of the defroster airflow mode door lever.
    3. Rotate and remove the vacuum control motor from the defrost door lever.
    To Install:
    1. Rotate and install the vacuum control motor on the defrost door lever.
    2. Install and tighten the mounting screws.
    3. Connect the vacuum line to the vacuum control motor.
    4. Install the passenger's air bag module.
    Floor Console Register Duct Vacuum Motor To Remove:
    1. Remove the floor console.
    2. Remove the right-side instrument panel insulator.
    3. Working from the passenger's footwell, disconnect the vacuum hose.
    4. Remove the screws and the floor console register duct vacuum control motor. CAUTION
      Do not attempt to bend any part of the floor console register duct door lever.
    5. Rotate and remove the vacuum control motor from the floor console register duct door.
    To Install:
    1. Rotate and install the vacuum control motor on the floor console register duct door.
    2. Install and tighten the mounting screws.
    3. Connect the vacuum hose to the floor console register duct vacuum control motor.
    4. Install the insulator under the dash.
    5. Install the floor console.
    Panel/Floor Door Vacuum Motor To Remove:
    1. Working through the driver footwell, remove the two screws and the shield. CAUTION
      Do not attempt to bend any part of the airflow mode door lever.
    2. Label and disconnect the two vacuum hoses.
    3. Remove the mounting screw.
    4. Lift, rotate and remove the panel/floor door vacuum control motor from the door lever.
    To Install:
    1. Install the panel/floor door vacuum control motor on the door lever.
    2. Install and tighten the mounting screw.
    3. Connect the vacuum hoses in their original positions.
    4. Install the shield on the vacuum motor.
    Auxiliary Air Distribution Blend Door Actuator To Remove:
    1. Remove the right rear quarter trim panel access panel. Auxiliary climate control housing removal and installation ford-10-00-4589.gif

    2. Remove the auxiliary air distribution blend door actuator screws.
    3. Disconnect the auxiliary air distribution blend door actuator connector.
    To Install:
    1. Connect the auxiliary air distribution blend door actuator connector.
    2. Install the auxiliary air distribution blend door actuator screws.
    3. Install the right rear quarter trim panel access panel.
    Auxiliary Temperature Blend Door Actuator To Remove:
    1. Remove the right rear quarter trim panel. Auxiliary climate control housing removal and installation ford-10-00-4589.gif

    2. Disconnect the temperature auxiliary temperature blend door actuator connector.
    3. Remove the temperature auxiliary temperature blend door actuator screws.
    4. Remove the temperature auxiliary temperature blend door actuator.
    To Install:
    1. Install the temperature auxiliary temperature blend door actuator.
    2. Install the temperature auxiliary temperature blend door actuator screws.
    3. Connect the temperature auxiliary temperature blend door actuator connector.
    4. Install the right rear quarter trim panel.
    --- In-Car Temperature Sensor Removal & Installation To Remove:
    1. Remove the instrument cluster finish panel.
    2. Disconnect the in-vehicle temperature sensor connector.
    3. Disconnect the in-vehicle temperature sensor aspirator tube.
    4. Remove the in-vehicle temperature sensor screws.
    5. Remove the in-vehicle temperature sensor.
    To Install:
    1. Install the in-vehicle temperature sensor.
    2. Install the in-vehicle temperature sensor screws.
    3. Connect the in-vehicle temperature sensor aspirator tube.
    4. Connect the in-vehicle temperature sensor connector.
    5. Install the instrument cluster finish panel.
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    Oct 07, 2010 | 2004 Ford Freestar

    2 Answers

    When I turn my air conditioner on, the air blows out on the dashboard for the windshield and not from the vents. What can I do??


    The blend door actuated by solenoids may not be working correctly causing a/c cool air to come out of the windshield vents, rather than the regular front vents.

    Defroster Valve Actuator 1996 – 1999 1996 – 1999 HVAC Actuators gm-10-00-1840.gif

    To Remove:
    1. Remove the air distributor assembly.
    2. Unclip the defroster valve actuator from the air inlet.
    3. Disconnect the defroster valve actuator from the valve.
    To Install:
    1. Disconnect the defroster valve actuator from the valve.
    2. Clip the defroster valve actuator from the air inlet.
    3. Install the air distributor assembly.
    Heater/Bi-Level Actuator 1996 – 1999 1996 – 1999 HVAC Actuators gm-10-00-1840.gif

    To Remove:
    1. Remove the air distributor assembly.
    2. Remove the clip and the screws that fasten the 2 halves of the air distributor assembly and separate the air distributor assembly.
    3. Unclip and disconnect the heater/bi-level actuator from the valve.
    To Install:
    1. Connect and clip the heater/bi-level actuator to the valve.
    2. Fasten the 2 halves of the air distributor assembly together and torque the fasteners to 13 in-lbs (1.5 Nm).
    3. Install the air distributor assembly.
    ---
    Removal & Installation Recirculation Actuator 1996 – 1999 1996 – 1999 HVAC Actuators gm-10-00-1840.gif

    To Remove:
    1. Remove the left sound insulator panel.
    2. Disconnect the vacuum hose from the recirculation actuator.
    3. Remove the recirculation actuator from the valve.
    To Install:
    1. Connect the recirculation actuator to the valve.
    2. Clip the recirculation actuator to the air inlet.
    3. Connect the vacuum hose to the recirculation actuator.
    4. Install the left sound insulator panel.

    Aug 13, 2010 | 1997 Buick LeSabre

    1 Answer

    How to install ac mode actuator on 2003 gmc sierra


    prev.gif next.gif Air Door Actuators Removal & Installation Air Temperature Actuator Air Temperature Actuator Replacement gm-10-00-559.gif

    To Remove:
    CAUTION
    Do not apply power to the actuator when it is removed from the HVAC module.
    1. Remove the instrument panel hush panel.
    2. Disconnect the connector from the air temperature actuator.
    3. Remove the air temperature actuator mounting screws.
    4. Remove the actuator from the HVAC assembly.
    To Install:
    1. Position the air temperature actuator on the HVAC assembly.
    2. Install the actuator mounting screws.
    3. Install the electrical connect to the air temperature actuator.
    4. Install the instrument panel hush panel.
    Right Side Air Temperature Actuator (2003-2007) Right Air Temperature Actuator Replacement gm-10-00-560.gif

    To Remove:
    CAUTION
    Do not apply power to the actuator when it is removed from the HVAC module.
    1. Remove the instrument panel carrier.
    2. Disconnect the connector from the right air temperature actuator.
    3. Remove the actuator mounting screws.
    4. Remove the right air temperature actuator.
    To Install:
    1. Position the right air temperature actuator on the HVAC assembly.
    2. Install the actuator mounting screws.
    3. Connect the electrical connector to the actuator.
    4. Install the I/P carrier.
    5. Calibrate the actuator.
    Left Side Air Temperature Actuator (2003-2007) Left Air Temperature Actuator Replacement gm-10-00-561.gif

    To Remove:
    CAUTION
    Do not apply power to the actuator when it is removed from the HVAC module.
    1. Remove the I/P insulator panel.
    2. Disconnect the connector from the left air temperature actuator.
    3. Remove the actuator mounting screws.
    4. Remove the left air temperature actuator.
    To Install:
    1. Position the left air temperature actuator on the HVAC assembly.
    2. Install the actuator mounting screws.
    3. Connect the electrical connector to the actuator.
    4. Install the I/P insulator panel.
    5. Calibrate the actuator.
    Mode Actuator Mode Actuator Replacement gm-10-00-562.gif

    To Remove:
    CAUTION
    Do not apply power to the actuator when it is removed from the HVAC module.
    1. Remove the floor air outlet from the floor duct.
    2. Remove the center console and center console duct (if equipped).
    3. Disconnect the electrical connection at the mode actuator.
    4. Remove the mode actuator mounting screws from the HVAC module.
    5. Remove the mode actuator with the actuator cam attached.
    To Install:
    1. Position the mode actuator with the actuator cam to the HVAC module.
      • Align the heater/defroster valve lever with the cam slot
      • Align the A/C valve lever with the cam
    2. Install the mode actuator mounting screws.
    3. Connect the mode actuator electrical connection.
    4. Install the center console duct and the center console (if equipped).
    5. Install the floor air outlet duct extension to the floor air duct.
    6. Calibrate the actuator.
    Air Inlet Actuator/Recirculation Actuator Delphi Recirculation Actuator Replacement (Delphi) gm-10-00-564.gif

    To Remove:
    CAUTION
    Do not apply power to the actuator when it is removed from the HVAC module.
    1. Remove the instrument panel upper trim panel.
    2. Remove the instrument panel lower trim panel and glove box assembly.
    3. Remove the passenger side air bag.
    4. Disconnect the connector from the recirculation actuator.
    5. Remove the recirculation actuator mounting screws.
    6. Remove the recirculation actuator from the HVAC assembly.
    To Install:
    1. Position the recirculation actuator on the HVAC assembly.
    2. Install the recirculation actuator mounting screws.
    3. Connect the electrical connector to the recirculation actuator.
    4. Install the passenger side air bag.
    5. Install the instrument panel lower trim panel and the glove box assembly.
    6. Install the instrument panel upper trim panel.
    7. Calibrate the actuator.
    Visteon Recirculation Actuator Replacement (Visteon) gm-10-00-566.gif

    To Remove:
    CAUTION
    Do not apply power to the actuator when it is removed from the HVAC module.
    1. Remove the HVAC module assembly.
    2. Remove the evaporator core cover from the HVAC module.
    3. Remove the recirculation actuator from the HVAC module assembly.
    To Install:
    1. Position the recirculation actuator on the HVAC assembly.
    2. Install the recirculation actuator mounting screws.
    3. Install the evaporator core cover to the HVAC module.
    4. Install the HVAC module assembly.
    5. Calibrate the actuator.
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    Jul 09, 2010 | 2000 GMC New Sierra 1500

    2 Answers

    200 Jeep Laredo..Air is cold and fan is blowing,


    there is a blend door actuator for the laredo and if is bad the air wont come out here is a pic of what it looks like and how to get to it


    The single zone heater-A/C system is equipped with a single blend door actuator. The dual zone system has two blend door actuators, one for the driver side blend-air door and one for the passenger side blend-air door.
    7d2da02.gif
    1. Disconnect and isolate the negative battery cable.
    2. Remove the glove box from the instrument panel.
    3. Remove the three screws that secure the blend door actuator to the passenger side of the HVAC air distribution housing .
    4. Remove the blend door actuator from the air distribution housing and disconnect the HVAC wire harness connector from the actuator.
    5. Remove the blend door actuator from the vehicle
    to instal
    1. Position the blend door actuator into the vehicle.
    2. Install the blend door actuator onto the passenger side of the HVAC air distribution housing . If necessary, rotate the actuator slightly to align the splines on the actuator output shaft with those on the blend door cam .
    3. Install the screws that secure the blend door actuator to the passenger side of the air distribution housing . Tighten the screws to 17 inch lbs. (2 Nm).
    4. Connect the HVAC wire harness connector to the blend door actuator.
    5. Install the glove box into the instrument panel.
    6. Reconnect the negative battery cable.

    Sep 09, 2009 | 1998 Cadillac Seville

    2 Answers

    Heating system only blows out hot air through the vents


    I would look at the air blend doors first, it sound like they are not working or your control in the dash is not working send a signal to them. they work by changing the air from hot to cold or in between.

    Avalanche, Sierra And Silverado
    1. Remove the floor air outlet duct extension (1) from the floor duct (2). 0900c152801c9c8a.jpgRemove the floor air outlet duct extension (1) from the floor duct (2)
    2. Disconnect the electrical connection at the blend door actuator (10). 0900c152801c9c8b.jpgBlend door actuator and related components
    3. Remove the blend door actuator mounting screws from the HVAC module.
    4. Remove the blend door actuator as an assembly with the actuator cam. 0900c152801c9c8c.jpgRemove the blend door actuator mounting screws from the HVAC module
    To install:
    1. Install the blend door actuator as an assembly with the actuator cam.
      1. Line up the heater/defroster valve lever with the blend door actuator cam slot.
      2. Line up the A/C valve lever with the blend door actuator cam
    2. Install the blend door actuator mounting screw to the HVAC module.
      1. Tighten the blend door actuator mounting screw to 14 inch lbs. (1.6 Nm).
    3. Connect the electrical connection at the blend door actuator (10). 0900c152801c9c8b.jpgBlend door actuator and related components
    4. Install the floor air outlet duct extension (1) to the floor air duct (2).
    C/K Series
    1. Disconnect the electrical connector to the mode actuator that is located on the left side of the air distribution case.
    2. Remove the screws.
    3. Remove the adjuster links from the control lever.
    4. Remove the mode actuator.
    5. Adjust the mode actuator by completing the following steps:
      1. Connect the electrical connector to the actuator.
      2. Turn the ignition switch to the RUN position. Allow the self-positioning of the actuator.
      3. Turn the ignition switch to the OFF position.
      4. Remove the actuator from the electrical connection. 0900c152801c9c8d.jpgBlend door actuator-C/K Series
    To install:
    1. Install the mode actuator.
    2. Install the screws.
    3. Install the adjuster links to the control lever.
    4. Connect the electrical connector.
    5. Test the circuit operation

    Nov 27, 2008 | 2001 Chevrolet Silverado

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