Question about 2002 Chevrolet TrailBlazer

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2002 trailblazer fan switch worked on 2-4 only until yesterday and all stopped working. How do I know if it is the resister , fan motor, or fan switch.

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Most likely its the resistor

Posted on May 28, 2011

Testimonial: "I bought the resister and changed it myself. It works fine and this was the perfect solution. It only cost me around $35."

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1 Answer

Blower


Could be 2 things,the blower motor resister or the switch,here's a link to the resister,it's located by blower.Here's another link to where the blower motor is.Here's a link on how to remove control panel.

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Blower Motor will not work when resister is installed.


Check the contact connection on the connector, many times these overheat and melt the surrounding plastic. You may need to replace the connector wire harness.

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Heater blower stopped working?


Hello,
You may want to try your fan on all speeds. If it will work on high, you have a bad resistor for the fan motor. ( high speed doesn't go through the resistor ).
If it doesn't work on any speed, I would check the following;
1. Make sure the fuse isn't blown for the fan blower motor.
2. Check, or have checked the wires between the fan control switch and the fan blower motor.
3. Have the fan control switch checked.
4. Have the fan blower motor checked.

I hope this helps you.

Feb 03, 2011 | 2002 Buick Rendezvous

1 Answer

Where do I locate the blower motor resister on a 2002 trail blazer. fuses are ok. fan does not work. first lost 1,2,5 speeds a few weeks ago then lost 3,4 today.


Below the right side of the dash, next to the blower motor, also, check the plug that plugs into the blower motor resistor, I've seen those plugs get melted and lose connection..

Dec 13, 2010 | 2002 Chevrolet TrailBlazer

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OUR 04 TRAILBLAZER, THE A/C STOPPED WORKING, IT WOULD WORK SOMETIMES AND BLOW COLD AIR NOW NOTHING COMES OUT, OR THE HEATER TOO.. LITTLE AIR WILL PULL THROUGH IF ON THE HIGHWAY, I CAN HEAR IT CLICK OVER...


a couple of things,1 blower motor fuse.2 blower motor gone out.3 switch on fan speed control switch not sending signal to fans.after checking the fuses.next check theswitch on control panel.set ac or heater.if fan still doesnt come on then replace it.when it work and then stops working there are a lot of possiblities that caused the prob relay too not fliping over inside staying close loop.hope this helps.

Aug 16, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

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to stop the guessing ,replace blower motor and blower resister/if motor is bad it can make the resister go out,u may have a blower relay also thats bad replace if the control speed switch has not got a burned spot on the back where the wires plug up then this should repair ur car/it sounds like a lot to replace and maybe u think unnessasary but these componts work all together and affect one another

Jun 29, 2009 | 2002 Chevrolet Impala

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