Car Problem Reports

GMC Canyon AC Blower Inop Due to Failed Resistor

GMC Canyon Problem
98 Reports
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Model Years Affected: 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012

Average Mileage: 84,387 mi (11,400 mi - 270,800 mi)


The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Our technicians recommend to confirm the resistor is at fault by first checking the operation of the switch.

  • , , 118,000 mi

    I had the same problem that my fan speeds would not run on 1-3, but I found the problem, the problem is there is a plug in to the fan, it is located on the passenger side under the dashboard, the plug has loose wires that you can wiggle when on speeds 1-3, I have tried to tighten the wire, it works for awhile but then it loosens back up. It could be an easy fix to figure how that plug can be tighten.

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  • , , 55,000 mi

    Last year at the beginning of the summer, the same problem occurred. The A/C stopped working on speeds 1, 2 and 3. Only 4 works. The problem was resolved through the dealer, and it was explained that it was a plastic switch that had failed. This year, the same problem. Of interest, is that the problem has happened at the beginning of the summer months both times. If this is a common problem, why hasn't the vehicle been recalled for a free fix? If I knew how to fix it myself, I would.

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  • , , 177,000 mi

    Blower motor not operating all the time on settings 1 - 3, but always works on 4(HIGH)..

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  • , , 55,000 mi

    I have seen this on my canyon, as on others. My blue wire was burnt as the pins were too. What is going on with this the design on the plug that holds the wire in the socket allows the wires in the connector to drop away from the pins so they arc. what i did was shrinked tubed the burt wire. clean all the contacts push the wires all the way into the connector. (I forgot to say you have to remove the black retainer on the grey plug). zip tied them in a groups of two then replace the retainer plug and then epoxied the back of it so the wire can not drop. I wished GMC would have fixed this design issue high-current and bad plugs do not mix.

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  • , , 75,000 mi

    My blower switch does this from time to time. Sometimes it works and sometimes it doesn't, but happening more frequently lately. When it goes out the fan will only work on high. The three lower speeds will not work. I have not fixed it yet. Just recently found out that the resistors tend to go bad on these blowers.

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  • , , 65,000 mi

    blow works on speed 1-2 and 4 speed 3 does not work at all

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  • , , 94,000 mi

    I have the same problem, blower does not work on 1-3 only 4 but then occasionally will begin to work on the lower speeds. I was told it was a switch that cost $200 to replace - so guess I'll have to run on high or not at all!

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  • , , 95,895 mi

    blower only works on high, i changed the wiring but the problem is back, this should be a warranrty issue.

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  • , , 70,000 mi

    Some time the blower switch only works on high(4. If I shut the truck down for a short period (run into the store) and return all blower speeds work when the truck is started.

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  •  Rookie

    Sometimes the the blower will work aat lower speeds, sometimes it won't. No solution so far.

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