Question about 2005 Chevrolet Colorado

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A-c switch on my 2005 colorado only works on high speed

A-c switch will not work on 1,2,3 settings only on high (4). how do i replace it with out going to an expensive dealership.

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  • Anonymous Oct 02, 2008

    I have the same problem, my ac only works on setting 4. what is the deal what is the best way for me to replace this?

  • Anonymous Oct 16, 2008

    I have this same problem... Why is GM not doing a recall on this?

  • pepsidilla Oct 29, 2008

    I have the same problem on my 2006 Colorado. I have taken it to get fixed 2x in the past several weeks to Firestone. I believe they replaced the blower resistor both times. I'm glad someone has figured out what the real problem is.

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I had the same problem on my 2005 Colorado. I changed the blower resistor but still had the same problem. I had no voltage at the blower except on high. After talking with the local Chevy dealer, I found the plug-in connector that goes to the resistor had a burnt place on one of the terminals. AC offers a kit that you can splice into your existing wiring. Took me around 30 minutes to change. Costs around $50. So be sure to check the plug before changing anything out.

Posted on Sep 16, 2008

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It can be the blower resister pigtail or the blower switch is bad

Posted on Feb 26, 2009

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  • Chevrolet Master
  • 2,039 Answers

The heater resistance is broken passager side under the dash 35$ check it out pierre

Posted on Sep 05, 2008

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1 Answer

05 chevy colorado blower motor only works on high


Check the blower motor resistor in the front of the passenger side floorboard

Dec 15, 2013 | 2005 Chevrolet Colorado

2 Answers

My blower control switch only works on level 4 or the highest setting. could there be a loose connectror while I still get resistance and


Hi J, I believe the problem is with the resistor inside the the climate box. If you remove the covers from the side of the center consul and look carefully at the heater unit you should see a small panel (Maybe two inches square) with an electrical connection attached. Remove the plug and then the retaining screw and withdraw the unit. On the back of it you will see wire wound resistors. These are for the lower speeds of the interior fan operation and if blown the fan will only operate at the highest speed. either replace the unit or reconnect the broken wires and refit. Regards John

Jul 21, 2012 | 2005 Chevrolet Colorado

1 Answer

2005 Chevy colorado blower motor only work on high.


The blower only works on High because something called a "blower motor resister" has gone bad. The resister works by resisting/absorbing the power to the blower motor on the lower speeds, At high speed it lets all the power go through. The part is about $20.00 for a Jeep (common problem). Getting at it and knowing where it is I can't help. But with that knowledge, you should not get screwed by the repair shop.

Apr 29, 2010 | 2005 Chevrolet Colorado

1 Answer

Fan for the a/c - heat will only work on high.


Common issue for many cars, Jeeps big time. Your "Blower Motor Resister" is defective. The reason for only 4 on the speed is the resistor controls the voltage going to the blower motor on the lower three speeds. This is a common problem, don't let anyone tell you it is the blower moter itself. The part should cost between $20-$40, depending on where purchased. The killer is getting it installed, some are easy to get at behind the glove box, others are up in the dashboard harder to get at. Chevy techs should be well aware of this, and be able to give you a good estimate of repair.

Oct 01, 2009 | 2005 Chevrolet Colorado

1 Answer

Fan blower only works on high speed (4) not on any lower speeds


this is caused by the blower resistor as you correctly diagnosed, but the new resistor is blown because the fan motor is drawing to much current and blowing the resistor back out, replace the blower motor and resistor again.

Sep 15, 2009 | 2005 Chevrolet Colorado

1 Answer

Blower on my 2004 Chev Colorado only works on high setting #4.


You need a resistor pack, which is likely located in the air box, near the blower motor.

Jun 29, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

The AC blows on #4 fan setting but doesn't blow at all on 1-3


That is the blower resistor. 4 is wide open, so, no resistance. I had 4 of them put into my truck. The wires were burnt and shorted the others until the problem was found. Check the plug if you do this yourself.

Jun 13, 2009 | 2005 Chevrolet Colorado

2 Answers

Blower motor on works on high speed


Also, I'm having the same problem, kinda. My blower doesn't work on any speed. It worked fine before, but now it doesn't.

However, it's not a hard fix. Here's a link to a site with a write-up on how to replace the resistor pack as well as the wiring harness: http://www.355nation.net/forum/how-tutorials-reviews-service-bulletins/6401-how-hvac-fan-motor-resistor-connector-replacement.html

May 10, 2009 | 2005 Chevrolet Colorado

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