AC Blower Not Working Correctly Due to Failed Resistor on Chevrolet Colorado

The heater - AC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block.

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Average mileage: 88,951 (11,000–246,546)
7 model years affected: 2004, 2005, 2006, 2007, more2008, 2009, 2012
321 people reported this problem
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Viewing 1 - 20 of 226 problem details
2005 Chevrolet Colorado 48,000 mi,
Blower motor has only worked on high #4 since I had 42000 miles on the truck. If I wiggle the warning harness under the glove box, 1 & 2 will work until I hit a bump or stop suddenly. I have a harness but am fearful of putting it in due to the passenger airbags!
2007 Chevrolet Colorado 99,000 mi,
Blower motor goes off and on. Sometimes will not work at all then all of the sudden it will start working.
2005 Chevrolet Colorado 63,100 mi,
I have replaced the Resistor pack 3 times. On the 2nd time I even did the wiring harness. Now it is out again, plus the Flashers, Aux ports, AC will not turn on, etc. Too many electrical problems to list.
2004 Chevrolet Colorado 85,000 mi,
The blower only works on level 4.
2005 Chevrolet Colorado 107,000 mi,
fan blower stops working in range 1 thru 3 intermittently
2005 Chevrolet Colorado 84,000 mi,
ac blower only works on1 2 4not 3rd
2004 Chevrolet Colorado 87,000 mi,
AC/Heater blower motor only works on level 4 (highest speed). haven't fixed it yet.
2005 Chevrolet Colorado 115,000 mi,
Hey guys, my air blower quit working on all 4 switch settings. I located the ground wires which are located just left of the air filter plastic cover and attached to the passenger side bumper. Just take the air filter cover off and you can see the box shaped black ground wire attached by a bolt to the bumper. Un bolt the ground wire and clean the contacts try the blower and it should work!
2004 Chevrolet Colorado 75,000 mi,
I have had this problem 3 times since I bought the truck in 2004. The blower would quit working on all speeds except high
2004 Chevrolet Colorado 60,000 mi,
Blower motor only worked on settings 0 and 4. If set in between, freon continues to circulate through the system without any cool air being blown into the cabin. I went through 2 resistors before realizing the wiring harness has a tendancy to come lose. I found that if I jiggle the harness when the blower is failing, it'll resume working at the in-between settings.
2004 Chevrolet Colorado 139,000 mi,
I have had this problem for the last 2 years and I had it fixed last year and it lasted 2 months.
2007 Chevrolet Colorado 39,000 mi,
It started at 39000 and i have 55,000 switch only works in 4th position
2005 Chevrolet Colorado 135,000 mi,
Had no heater or ac blower motor stopped working took to dealership they put a resister in did not fix then change blower motor did not fix ended up finding it was the ground under hood by air filter box a group of grounds in a ground block a wire jiggle lose.. fixed.. the about year later did the same thing again went right to the ground wire was lose again. fixed.. now 4 months later only have speeds 1 2 and 4..
2004 Chevrolet Colorado 90,000 mi,
I bought my 04 colorado 2wks ago and all the sudden the thing just stopped. I had a new resister put in and it worked for about 6mths and yesterday it went out again. This shound be recalled!
2005 Chevrolet Colorado 89,500 mi,
Replaced resister on blower motor
2008 Chevrolet Colorado 57,000 mi,
heat and ac blower motor quit working
heater and ac control only works on speed 4 but sometimes it works on all speeds
I had the problem where 1,2 and 4 worked and not 3. The recirculate would make a very bad buring smell. I replaced the resistor and the wires. First time around I thought the resistor was bad and trying to save money by doing it myself was not a good idea, but I removed the glove compartment again and found out that I had not placed the wire for the cold/hot setting back to it's place. If this happens, the heater kicks in after a short time because the cold/hot setting ends up in the middle setting. It has been working for a few weeks now. Dealership wanted to replace the blower, wiring and resistor for about $300. I spent around $50 by purchasing the harness and resistor from
2008 Chevrolet Colorado 40,014 mi,
blower not working