Question about 2005 Chevrolet Colorado

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2005 chevy colorado the fan blower will not let me select 123 have changed the control head and and have no positive result at the blower resister ?

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  • leotchko Mar 14, 2009

    Me too. Sometimes it works, sometimes not. When it won't work it's all (4) or nothing (0).

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I had this same problem on my 2006 colorado. when i purchased a new resistor and went to replace it, I decided to check the resistance of each position on the old one with the resistance on the new one. they were both the same. then I decided to look at the harness. I was told that it needed to be replaced as well but I decided to try just the resistor. The harness had one of the connections in the plastic connector that looked like it had over heated. (IE browned char like look) after installing the new resistor, it ran ok for about 2 days then started acting up again. Then I tried my own solution. I pulled the harness loose from the resistor and with the ignition and fan switch off took a paper clip and manuevered it under the connection with the charring and slightly bent the metal connector out. when complete, the adjusted connector appeared to be a tad too far out compared to the other connectors in the plastic. then I reconnected it to the resistor and haven't had a problem since. I did, just out of curiosity switch out the new resistor with the old one and it too also works with no problems. Of course, the dealership will not take back electreical parts that have been placed in use. This should have been a chevy recall but apparently they don't care about anything but the initial sale of their products. I sent an email to GM and got to not response.

Posted on Mar 02, 2009

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  • Chevrolet Master
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Does fan blow if you hot wire it??

Posted on Jan 31, 2009

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On low speed there is a ticking in the fan as though something was rubbing. The noise goes away on higher speeds. How can I remove the heater motor to see if there is something rubbing. This is on a 2005...


It's on the pasenger side of the truck. Where the persons feet would be if sitting there. Lay down on your back and look up under the dash. There will be you blower motor. There are three gold or siver colored 5.5mm headed bolts holding it up to the heater case. Pull those out and the blower motor will drop down. Also you will need to remove the electrical connector before pulling the screws out. I will bet a peice of paper has been sucked out of you glove box and is in the blower motor. Be sure to note the position of the blower motor, it can only go in one way.

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I have a chevy colorado. only the high spped fan works. there are no indicated fuses for the fan system what can the problem be


TRY THE BLOWER MOTOR RESISTOR FIRST. POWER GOES THROUGH THE BLOWER THEN TO THE RESISTOR AND THEN THE CONTROL MODULE TO GROUND.

THE RESISTOR IS ON THE BOTTOM OF THE HEATER CASE ON THE PASSENGER SIDE. USING A TEST LIGHT ATTACHED TO GROUND TOUCH EACH OF THE TERMINALS ONE AT A TIME WHILE SWITCHING THE POSITIONS ON THE BLOWER CONTROL. IF THAT WORKS YOU WILL HAVE A LIGHT FOR EACH WIRE IN EACH POSITION ON THE DIAL. THE RESISTOR IS THE PROBLEM THEN.


RESISTOR WIRE COLORS
LOW = YELLOW
2 = TAN
3 = LIGHT BLUE
HIGH = ORANGE

RATE ME, PLEASE

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1 Answer

Blower only works on 4,123 not working.


Hi There;
You say your heater fan only works on high.

This issue can be repaired by replacing what is called the "blower motor resistor". The electrical current flows through this unit in all positions except #4.
If you look under the dash on the passenger side with the heater fan on #4 you will hear the blower motor running. Just slightly toward the drivers side of the blower motor & closer to the firewall you will see a four wire connector. this is attached to the "blower motor resistor". If you get a replacement one & examine it you will see two screw holes where you will need to remove the 9/32nds screws from the one in your truck to remove the fauly one & install your new on. This part is relitivly inexpensive & it is not worth trying to locate a used one.
Please let me know if you need more info on this
Farrout!

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did you put power to the fan to see if it is good? did you check the fuse ?did you look at the blower resister?

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


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.

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Sounds like it needs spark plugs and wires, and a fuel system treatment.

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