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As there are continous request postings about the A/C blower issues on the 1st generation durango forums, I will post the fix here so all new users will be able to see it first before they post it in the forums.
If you have a 2001-2003 Durango and your front fan motor is working on high speed only (common issue) or not blowing at any speeds, chances are the resistor pack is blown. This is a known common issue for the 2001-2003 Durangos with the new redesigned dash and interior. This resistor pack is a dealer part item only. Cost is around $13-$20 and is a easy do it yourselfer. The resistor pack is located on the passenger side. When you look there, look towards the center part of the dash and you will see a wire harness connecting to the air vent duct. You will need a 7mm or 8mm socket with a u-joint shaft as one of the two screws may be hard to get access to using a straight extension socket shaft.
1. Unplug the wire harness.
2. Remove the two screw and pull out the resistor pack. You will notice on the replacment pack, it looks like a flat square resin pack. If you cannot pull it out, you may have to wiggle it out as I have seen some resistor packs that blown have swollen and hard to slide out.
3. Slide in the replacement resistor pack. Re-install the two screws.
4. Re-connect the wire harness.
That's it. For first timers, this may take you 20-30 minutes. But once you get the hang of it, the actual job will only take less than 5 minutes.
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two things, 1, when you change your resistor, make sure your wire harness isnt damaged also, or else your new resistor will blow in seconds.
second, i had the problem that my wire harness was fried too, and i cannot seem to find anything on replacing the wire harness. i tried to take out the glove box, but there is a panel behind it and im not sure if im going to have to take out the whole dash, which i really do not want to do.
It's a fairly simple replacement. Looking through the different posts, it looks like the part number may have been superceeded/changed since I replaced mine back in 2003 I think it was. Didn't think it was going to be that common of a problem when I created the page, but looking at my site stats, I average about 3-400 page visits a month on my resistor page.
I, of course, had the same problem happen to me recently. I read your fix and followed the instructions, and within a matter of minutes, had my fan working properly again. Thanks so much for the info. BTW, it only cost me $15 Cdn for the part.