Car Problem Reports

Chevrolet Colorado AC Blower Not Working Correctly Due to Failed Resistor

Chevrolet Colorado Problem
272 Reports
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Model Years Affected: 2004, 2005, 2006, 2007, 2008, 2009, 2012

Average Mileage: 86,808 mi (11,000 mi - 246,546 mi)


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

  • , , 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!

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  • , , 85,000 mi

    The blower only works on level 4.

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  • , , 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.

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  • , , 84,000 mi

    ac blower only works on1 2 4not 3rd

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  • , , 107,000 mi

    fan blower stops working in range 1 thru 3 intermittently

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  • , , 87,000 mi

    AC/Heater blower motor only works on level 4 (highest speed). haven't fixed it yet.

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  • , , 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

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  • , , 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.

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  • , , 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.

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  • , , 39,000 mi

    It started at 39000 and i have 55,000
    switch only works in 4th position

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