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1999 Buick Century Replace Air Temp Control Blend Dr Actuator

Help a lady out. I am trying to replace this piece b/c air blows cold on passenger side, warm on driver side. Took off the insulator panel (plastic). Took off the knee bolster (metal). Next step online says to disconnect the temp actuator remove and replace. I can't reach it. Is there something else that has to come off first? Pls. help. Dying of heat w/2 young kids!

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Yes its hard to reach, you must used an extension.

Posted on Jul 23, 2009

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Posted on Jan 02, 2017

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To Jeff Turcotte, this is Lisa McCurry. my question is my 2001 buick century blows warm air on drivers side and cold air on passenger side, can you tell me where the acutator is located.


Lisa. Keep all your followups in the original question by clicking COMMENT under the person you are talking to. That way, they get a notification.

Actuators are always to the left and right of the centre unit. Google 'Buick Centry blend door actuator', and look at the videos.

Andrew - Fixya Moderator

My 2001 buick century blows warm air on drivers side and cold air on...

Jun 15, 2017 | Buick Cars & Trucks

2 Answers

My 2001 buick century blows warm air on drivers side and cold air on passenger side could the problem be that the flapper is stuck.


The electric control actuator more then likely ! Do you hear any clicking come from behind the instrument panel . These actuators have plastic gears inside and they break , strip etc... Can also set DTC'S - diagnostic trouble codes to set in the HVAC - control panel (module ) A scan tool used to check engine codes can't read these codes . Need a factory scan tool or professional grade .
DTC B0361
The HVAC control module receives a left air temperature actuator position signal from the left air temperature actuator. The left air temperature actuator position sensor is a potentiometer that is tied to a 5 volt reference source. The variable output from the potentiometer feeds back a position signal to a pull-up resistor located in the HVAC control module. This signal is used to determine the necessary drive signal to the left air temperature actuator motor to provide the proper air mix door position. This value is stored in the Keep Alive Memory (KAM) portion of the HVAC control module.
DTC B0363
Left air temperature actuator signal circuit stays at 4.5 volts or higher.

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Temperature Valve Actuator Replacement - Left Side
Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gauges and Console.
Remove the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gauges and Console
Disconnect the electrical connector from the left air temperature actuator.
Remove the mounting screws from the left air temperature actuator.
Remove the left air temperature actuator.

May 23, 2017 | Buick Cars & Trucks

1 Answer

Ac temp blend door actuator where is it located on car.


Normally the actuator is inside by the floor in the center of the dash. It is a small motor with an arm that directs the door to the heater or the air. Hope this helps.

Oct 26, 2015 | 1999 Buick Park Avenue

1 Answer

I have a 1998 Buick Century has 2 zone heating Driver side works, pasinger side blows cold air


It sounds like you have either a defective passenger blend air door actuator or a broken passenger blend air door.

Sometimes the actuators just get stuck. Try turning the passenger control to full COLD and wait about 1 minute. Then turn it to full HOT and see if it changes. I have done this with several GM vehicles and I often get a "POP" noise when I change it back to HOT and everything starts working again. I have also had some luck getting stuck doors loose by removing the hush panel from under the dash and "thumping" on the A/C housing with my fist.

If none of this works, you will have to remove the dash to fix it.

Nov 11, 2011 | 1998 Buick Century

1 Answer

2000 buick century blows cold air from passenger side but warm air from driver side


there is a drivers blend door actuator. the actuators are know to go bad. I know in toronto the dealer wants 80 bucks for the part. it easy to change. save yourself the money and do it yourself if you can

Aug 19, 2011 | 2000 Buick Century

1 Answer

96 buick regal, w/dual climate control, w/ac on blows hot air on driver side and cold air on the passenger side


It can be low on freon,or,the actuator motor foor that side blend door is bad,if so,the dash has to be removed to replace the actuator motor.

Jun 07, 2010 | 1996 Buick Regal Olympic Gold

1 Answer

Passenger side only blowing cold air.


You need to replace the "blend" door actuator motor on the pass side. I recommend getting that from your nearest gm dealer to ensure proper fit. When you adjust the air from cold to warm to hot, the blend door moves to direct the right amount of cold, or warm, or hot air your desire on that side of the vehicle

Dec 04, 2009 | 2000 Buick Regal

1 Answer

My 1997 buick park avenue when i open the ac on the passenger side it blows cold air and on the driver side hot air how can i fix this


U need to replace the air temperature control blend door actuator motor, this requires removing the dash to access the motor for the blend door.

Apr 13, 2009 | 1997 Buick Park Avenue

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