Question about 2003 Chevrolet TrailBlazer

1 Answer

2003 Chevy Trailblazer Environmental Control Problem

The A/C and interior fan seem to be working fine...as far as its cooling capabilities. The problem I'm having is the four main dashboard vents aren't blowing any air out...period. I think the problem might be the air vent selector switch (ya know the knob that lets you select where the air comes out). The only hitch to that is it'll switch it from floor all the way to defrost, but when I select the front vents, all the air comes out the floor vents. This all started about two weeks ago when I went out to start my TB, which I had driven just that morning without a problem. When I tried to start it up, it clicked once at me and then everything went dead. I checked the voltage on the battery and it only had about 3 volts. Obviously not enough to start a vehicle. I got a jump from my neighbor and went on my way. During my trip, the voltage meter constantly fluctuated anywhere from about 10 volts all the way up to 14. When I got to my destination, my buddy took me to Wally world and I got a new battery. Problem solved. Haven't had a problem since then. However, my vents are still not blowing any air out. Any suggestions as to what the problem might be?

Posted by on

  • 2 more comments 
  • Anonymous Aug 07, 2008

    I had a problem with my trailblazer air not not blowing up front, but it would in the rear. I found the fan motor resistor was bad. I replaced it and it works fine.

  • graphxguy Dec 14, 2008

    GraphxGuy@aol.com



    I have the EXACT same problem. Was told by my mechanic that it was a computer problem and needed to take it to a dealership; haven't been able to afford that yet. Please advise me if you find the solution. Thanks!

  • klienschatz Jan 29, 2009

    my vents do not blow out air either. did anyone try to replace the actuator?

  • Anonymous Apr 29, 2009

    my tb has the same problem..... the front vents dont blow air and the air dont work in the back either ...any suggestion!!!

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

THE AIR SELECTOR MAY BE BAD BUT THE ARMS ON THE SIDE OF THE HEATER THAT REDIRECT THE FLOW LOOSEN AND WILL NOT OPEN THE FLAPPER, THIESE ARE LOCATED ON THE DRIVERS SIDE WHERE THE AIR BLOWS OUT ONTO THE FLOOR ABOUT HALF WAY UP.

Posted on Dec 01, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

2003 chevy trailblazer cooling temp running 230


Smart man using a scanner for the actual temp. Assuming you're not losing coolant....2 things I'd look at here, 1st is you may have air in the system, make sure to purge all the air. 2nd is your fan clutch, I've replaced a few fan clutches in my own Trailblazer. Have had them bad right out of the box brand new. Have had bad brand new fan clutches on 2 of my last Trailblazers. You should hear it engaging especially in stop and go traffic.

Aug 02, 2016 | 2003 Chevrolet TrailBlazer

1 Answer

2003 chevy trailblazer driver door controls don't work, interior light won't work when driver door is opened. The other three doors work ok


There two common problems with the driver's door control panel, rain water gets into the module and damages the electrics or the wires in the door boot break or abrade and short out. To check out the control panel itself, take the passenger side panel and hook it up to the drivers side, if everything works, replace the driver's panel.

Dec 16, 2012 | 2003 Chevrolet TrailBlazer

2 Answers

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.

Aug 08, 2012 | 2003 Chevrolet Blazer

1 Answer

How do I fix a fan in a 2003 trailblazer LT


my 2003 Chevy Trailblazer EXT lt ac works/ but the fan won't go from low to any other setting? any ideas

Jul 07, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

Bad Clutch Fan? Rear ac/heat don't work front only works on 4


The fan clutch isnt engaged at all times, therefore it may be normal to hold it in place (not recommended). On these trailblazer's 4.2L engine the fan clutch is electronically controlled. Usually when this vehicle's fan clutch malfunctions, there is a random ticking noise while idling or at a stop, also the "service engine soon" may turn on. As for the the fan speed problem, this may be a faulty blower resistor malf (typical) or climate control unit may be faulty. Hopefully this helps!!

May 05, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

I have a 2003 Chevy Trailblazer and it with AC issues!


need to have the body control module scanned for codes.may need to go to the dealership for fix

Oct 28, 2009 | 2006 Chevrolet Trailblazer

1 Answer

2003 chevy trailblazer P0182 code


I think there is a update for the pcm for that code and for the loud cooling fan best I remember

Aug 05, 2009 | 1999 Ford Expedition

1 Answer

PO481 code Chevy IMPALA 2003


Looked it up in Chilton's, confirmed in http://www.obd-codes.com/trouble_codes/

P0481 Cooling Fan 2 Control Circuit Malfunction

Each fan will throw a different code. See 3 fans listed for your model. Here's a link for the wiring schematic: http://www.chiltonlibrary.com/content/images/WD/GM/014/WD_GM_014788.pdf


Best of luck.
Greg

May 23, 2009 | 2003 Chevrolet Impala

2 Answers

2003 Chevy Trailblazer - Rear Heat/AC Controls Don't Work


Sorry, I don't have an answer, but have the same problem. Did you ever figure out what was wrong?

Apr 16, 2009 | 2003 Chevrolet Tahoe

Not finding what you are looking for?
2003 Chevrolet TrailBlazer Logo

502 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...