Question about 2005 Chevrolet Colorado
New blower motor stoped working
When you replaced the motor did you replace the resistor and its wiring harness as well? I had to replace all 3 on mine to get them to work this is typical on the Colorado and trailblazers
Posted on Jun 08, 2014
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Posted on Jan 02, 2017
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
Posted on Mar 17, 2009
My suggestion is replacing your wiring going to the resistor which is acdelco part number PT1231. I have had the problem of speeds 1,2, and 3 intermittently working while 4 always worked. Afterreplacing this part, all of my fan speeds work all of the time.
Posted on Nov 06, 2009
the blower motor resistor and connector located under the pass. side of the dash need replaced the connector melts and burns the resistor an updated part is available from the dealer I have replaced many of them
Posted on Jan 08, 2010
Check voltage at the terminal that connects the blower if the problem is the current blower because eventually the brushes wear out
Posted on Jan 09, 2010
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.
Posted on Apr 29, 2010
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