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Blend door actuator ?


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  #1  
Old  February 5th, 2009, 6:02 PM
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Blend door actuator ?

When it gets real cold I get sometimes only get cold air. I think that the blend door is sticking or the actuator is going bad. I almost afraid to ask ! but how do you get to the blend door and actuator?

Thanks

Joe B

  #2  
Old  February 6th, 2009, 9:55 PM
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what year? single zone or dual zone? Are both of the heater hoses hot?

  #3  
Old  February 9th, 2009, 6:06 PM
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OOPs, sorry, forgot that important info... the Uplander is a 2005 with single zone heater. The heater is back to working fine. The only time I seem to have a problem is when it gets real cold, like the other day when it got down to zero... then It's blowing only outside air. Since it works OK otherwise i'm thinking that the actuator is OK and the problem is that when real cold the housing ( plastic I guess?) shrinks and binds the blend door. In any case I need to get in there and check it out.

Joe B

  #4  
Old  February 9th, 2009, 10:26 PM
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Temperature Valve Actuator Replacement (Single Zone)
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=1536779&pubCellSyskey=63237&p ubObjSyskey=1536779&from=sm&laborOpCode=&cellId=63 237#ss1-1536779">Removal Procedure


  1. <LI type=1>Remove the driver side knee bolster. Refer to Knee Bolster, Insulator, Molding Replacement - Instrument Panel in Instrument Panel, Gages, and Console. <LI type=1>Locate the air temperature actuator (6). <LI type=1>Disconnect the air temperature actuator electrical connector (7).


    <LI type=1>Remove the air temperature actuator bolts/screws (1). <LI type=1>Remove the air temperature actuator (2).
  2. Remove the air temperature actuator lever (3), if necessary.
<A href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=1536779&pubCellSyskey=63237&p ubObjSyskey=1536779&from=sm&laborOpCode=&cellId=63 237#ss2-1536779">Installation Procedure


  1. Important: The actuator lever can only be inserted into the door one way.
    <LI type=1>Install the air temperature actuator lever (3), if necessary. <LI type=1>Install the air temperature actuator (2). Notice: Refer to Fastener Notice in the Preface section.
    <LI type=1>Install the air temperature actuator bolts/screws (1). Tighten
    Tighten the bolts/screws to 1.2 N∑m (11 lb in).



    <LI type=1>Connect the air temperature actuator electrical connector (7). <LI type=1>Install the driver side knee bolster. Refer to Knee Bolster, Insulator, Molding Replacement - Instrument Panel in Instrument Panel, Gages, and Console.
  2. Re-calibrate the actuators. Refer to Actuator Recalibration .

  #5  
Old  February 9th, 2009, 10:27 PM
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Actuator Recalibration

When replacing the HVAC control module, it will be necessary to allow the HVAC control module to perform a calibration process.
When installing the HVAC control module, be sure to perform the following:


Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted,
improper HVAC performance will result.
  1. Place the ignition switch to the OFF position.
  2. Disconnect the scan tool.
  3. Install the HVAC control module.
  4. Connect all previously disconnected components.
  5. Start the vehicle.
  6. Wait 40 seconds for the HVAC control module to self-calibrate.
  7. Verify that no DTCs have set as current DTCs.
When replacing the HVAC actuator it will be necessary to allow the HVAC control module to perform a calibration process.
When installing the HVAC actuator be sure to perform one of the following:

Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If
interrupted, improper HVAC performance will result.

Preferred Method (w/Scan Tool)
  1. Clear all DTCs.
  2. Place the ignition switch in the OFF position.
  3. Install the HVAC actuator.
  4. Connect all previously disconnected components.
  5. Start the vehicle.
  6. With the scan tool, initiate the Motor Re-calibration feature of the Heating and Air Conditioning Special Functions menu.
  7. Verify that no DTCs have set as current DTCs.
Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted,
improper HVAC performance will result.


Alternate Method (w/o Scan Tool)

  1. Clear all DTCs.
  2. Place the ignition switch to the OFF position.
  3. Connect all previously disconnected components.
  4. With the Mode **** in the PANEL position, press and hold the AC button for 5 seconds.
  5. Rotate the Mode **** fully counterclockwise.
  6. Rotate the Mode **** fully clockwise.
  7. Rotate the Mode **** fully counterclockwise.
  8. Release the AC button.
  9. Wait 40 seconds for the HVAC control module to self-calibrate.
  10. Start the vehicle.
  11. Verify that no DTCs have set as current DTCs.


Last edited by shawnvw; February 9th, 2009 at 10:32 PM.
  #6  
Old  February 10th, 2009, 4:05 PM
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Shawn, thank you very much...
Joe B

  #7  
Old  February 10th, 2009, 7:50 PM
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good luck!

  #8  
Old  April 6th, 2009, 7:23 PM
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Hello, would a 2004 Chevy Tahoe use this same HVAC control module calibration?

Alternate Method (w/o Scan Tool)

Clear all DTCs.
Place the ignition switch to the OFF position.
Connect all previously disconnected components.
With the Mode **** in the PANEL position, press and hold the AC button for 5 seconds.
Rotate the Mode **** fully counterclockwise.
Rotate the Mode **** fully clockwise.
Rotate the Mode **** fully counterclockwise.
Release the AC button.
Wait 40 seconds for the HVAC control module to self-calibrate.
Start the vehicle.
Verify that no DTCs have set as current DTCs.

  #9  
Old  August 11th, 2009, 6:17 PM
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2001 Buick Regal

Any pointers on installing a replacement Air Door Actuator on a 2001 Buick Regal with Dual Zone cliamte control? I am currently getting Cold air on the Driver's side and hot air on the passengers.

Thanks

  #10  
Old  September 19th, 2009, 1:29 AM
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thanks for the complete diagram..in return to this favor I would also like to share this brake calipers diy to everyone..


Last edited by kurtdaniel; September 21st, 2009 at 8:11 PM.

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