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ar60 Posted on Feb 12, 2018
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05 trailblazer rear ac door actuator clicking noise and fan won't turn on

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Anonymous

  • Posted on Aug 08, 2008

SOURCE: My 2003 trailblazer rear door

Dealer had to reprogram the computer

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Stan R

  • 37 Answers
  • Posted on Apr 14, 2009

SOURCE: clicking/popping noise from rear a/c-heater unit

It's the temp blend door actuator.

roniecon

Ronny Bennett Sr.

  • 6988 Answers
  • Posted on Jul 01, 2009

SOURCE: Trailblazer ac fan only blows at feet or defrost, not console

the actuator motor is the problem most likeley/// at least 3 in system it will be half way up in side dash pull all under sheilding and use flash light and hand to feel for it ,u can watch them move to eliminate the one tha t is not working

Anonymous

  • 169 Answers
  • Posted on Aug 30, 2009

SOURCE: my 2002 trailblazer is making a clicking noise in the a/c

more likely a broken door in hvac case.with car running work controls and watch actuaters operate to locate good luck maybee a little challange

Anonymous

  • 226 Answers
  • Posted on Dec 06, 2009

SOURCE: Clicking noise in AC/Heater unit. Doesn't do in

the motor that opens the vent is stuck. Put in it fresh air mode. the vent should be on the pass side behind the glove box. Take off the glove box and disconnect the motor and replcae it. Or the cheap way is to not use that mode

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0helpful
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I have a 2003 mustang and when the air conditioning or heater to window I get a ticking noise but don't hear the noise when turned to the vent or floor can you tell me what might be the problem thanks
There are a couple of actuators under the dash that control the blend door flaps. They can end up with stripped internal gears. When you operate the controls it will indicate what actuator has failed and needs replacing. Here's a video on an 05 Mustang actuator fail diagnosis -
05 09 Ford Mustang AC Dash Clicking Blend Door Fix
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Sep 16, 2018 • Cars & Trucks
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Have a clicking noise in the right rear panel of my 2006 Envoy xl. Have had a new battery installed and a new alternator. The noise stays on all the time when the key is turned on . HELP!
That is a electrically controlled actuator for the rear HVAC - heating ventillation an air conditioning system . Mode door or temp. door actuator . They are plastic an the gears wear an strip .
Loud clicking sound from rear of 2003 Trailblazer EXT
2004 Chevy Suburban Rear Air Temperature Actuator Blend Door HVAC You would have to do the same thing to replace yours .

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Jun 06, 2017 • Cars & Trucks
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1answer

Clicking comeing inside near passanger rear turn signal
That is one of the actuators in the rear HVAC unit. Sometimes the door that they drive gets stuck or the actuator itself goes bad. In the picture below #3 & #33 are the two actuators. Replacement of #3 is not an easy job.



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Nov 10, 2012 • 2004 Chevrolet TrailBlazer
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1answer

Loud clicking noise from rear
If you have the EXT model Trailblazer, the clicking you hear is from the rear HVAC system and likely is one of the mode actuators trying to move a control door. The rear system is located behind a plastic panel in the rightside cargo area.
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Oct 08, 2012 • 2002 Chevrolet TrailBlazer
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1answer

AC issues
The problem is either an actuator or the door associated with it. Sometimes the gear strips, especially when the system goes thru a recalibrate after power has been removed and reapplied. Below is a diagram of the locations of the actuators.



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Sep 07, 2012 • 2002 Chevrolet TrailBlazer
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2answers

2005 chevy trailblazer ac won't work but defrost does while driving only
Hi. There happens to be a common problem with these trailblazers inside the ducting box located under the dashboard. The mode actuator door motor stops working due to a faulty motor itself and the default position is defrost only. As far as the Air Conditioning not working, there maybe another problem to diagnose there. Could be low refrigerant, or electrical problems to the compressor, or faulty fan clutch(another very common problem with these trucks). Type in mode actuator door and 2005 trailblazer in your search engine online i.e. Google or Yahoo and you will find many posts about this problem. I think there may even be a Youtube video about replacing it. Let me know you need more help. Thanks.
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Aug 08, 2012 • 2003 Chevrolet Blazer
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1answer

2002 trailblazer has four loud clicking noise when i start it sounds like it is be hind 4wd selector switch?
#04-01-38-002A: Clicking Noise From Instrument Panel After Vehicle is Started (Replace Mode Valve Actuator Assembly Using Special Tool GE-47676) - SUPERSEDED BY BULLETIN 05-01-38-001A - (Oct 21, 2005) Mode Valve Actuator Replacement Tools RequiredGE-47676 Mode Actuator Removal Tool
Removal Procedure
  1. Remove the left floor duct. Refer to Floor Air Outlet Duct Replacement - Left Side .
    2. Important: The service actuator is positioned in the bi-level mode. Place the mode door in the middle of the door's travel.
  2. Disconnect the mode actuator electrical connector.
  3. Remove the mode actuator mounting screws.
  4. Using GE-47676 remove the mode actuator.
Installation Procedure
  1. Install the mode actuator.
    2. Notice: Refer to Fastener Notice in the Preface section.
  2. Install the mode actuator mounting screws.
    3. Tighten
    Tighten the screws to 1.9 N·m (17 lb in).
  3. Connect the mode actuator electrical connector.
  4. Install the left floor duct. Refer to Floor Air Outlet Duct Replacement - Left Side .
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Jul 29, 2011 • 2002 Chevrolet TrailBlazer
1helpful
2answers

2002 TRAILBLAZER no rear heat. Rear fan works only blows out of lower vents. Will not switch to upper vents even on AC. Have heard clicking sounds from somewhere in the rear. Radiator is full. This...
Hello! One of the Blend Door Actuators is defective...There are three different Actuators...See picture #1...I would suggest that The Mode Door Actuator is defective...It is DORMAN Part # 604115...Cost = around $50..It is on the lower left side of the pictured HVAC unit....The part is shown in picture #2....After replacing The actuator...Pull the heater fuse...Start the engine...Run for 45 seconds...Turn off key...Replace fuse...This allows the computer to learn the new part...Guru...saailer




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I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

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Jan 03, 2011 • 2002 Chevrolet TrailBlazer
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2004 Trailblazer - Clicking problems with heater. I also had a problem with a clikcing noise in the rear passenger side. I took out the fuse for the AC from under the rear seat fuse box and it stop...
You have bad control actuators. Not sure which one. You have one for the modes and one for the temp. Same on the rear. The gears strip in the actuators.
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Jul 10, 2010 • 2004 Chevrolet TrailBlazer
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1answer

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If the noise is coming from the rear with rear A/C it sounds like you have a mode door actuator bad, same if noise is coming from front in dash. Have seen this before. In the rear you will have to remove pass. rear cargo area side panel, you have 2 actuators back there just feel which one is making noise, one on top is mode door and one on side of A/C case is temp. door. Hope this helps.
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Jul 26, 2009 • 2005 Ford Expedition
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I have a 2003 mustang and when the air conditioning or heater to window I get a ticking noise but don't hear the noise when turned to the vent or floor can you tell me what might be the problem thanks

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