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How to Replace Blower Motor Resistor 2003-06 GMC Sierra 2500 HD
Created on:
Tools used
Socket Extensions
7mm Socket
Ratchet
7/32 Inch Socket
1. access the resistor
Remove the four bolts under the glove compartment.
Use your 7mm socket and driver
2. remove the resistor
Unplug the resistor from the harness.
Remove the four bolts securing the cover next to the resistor and unplug the remaining harness.
Unbolt the now unplugged resistor and remove it.
3. Install new resistor
Use your wrench to bolt it back in.
Plug everything back in, unbolting the cover obstructing the second harness again if necessary.
Test and replace the panel.
Brought to you by 1AAuto.com-- your source for quality replacement parts and the best service on the internet.
Hi, I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20+ years experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1AAuto.com. The right parts installed correctly- that's going to save you time and money. Thank you and enjoy the video.
In this video we're going to replace the blower motor resister on this 2002 GMC Sierra. This procedure is the same for pretty much any GMC or Chevy truck and SUV with this body style with the manual air conditioning controls. You'll need two sockets, a 7 mm and a 7/32 standard size socket and a ratchet and an extension.
A common problem with these trucks is, you can see with my system is on, I only get fan on the four and five positions. On the passenger side, there are four, 7mm bolts to remove, one there, one in there, there's one up in that hole right there, can't really video it and then over here closer to the gas pedal. There's one right there and once you remove those bolts, just reach in and kind of pull it down and out of the way. Just put your thumb in there and disconnect your harness. All the harness is, is a little tab right here that you need to pull back. This tab right here. That's up in there, pull that back and then down.
Now you're going to remove four bolts. You're going to remove two here that hold the resistor in, then you're going to remove two that hold this fan cover here. There's one here and then there's one opposite of that; that I really can't film. Once you have this cover loose, what you're going to fight to do is get a finger in there to press on the tab. This is what locks in there. Basically you have to reach in there and press right on this to unlock it and then pull it out, so that's what I'm trying to do there.
Maybe if you have smaller fingers you won't need to loosen this up, but I did, so I'm actually going to bolt this back up. We can take this out now. Here is my old resistor out. Here's the new resistor from 1A Auto. You can see it's pretty much the same. It's all going in there the same, the resistor itself, is a little different from the circuit board, but it will go right up in there. I have this snug. I'm going to put this up in there and pretty much by feel, reconnect it. It's not too difficult. Now I'll reconnect my harness. Just a quick note here, I did have to turn that connector around. Just the resistor from 1A Auto was just turned 180 degrees, so you just flip it around and it just plugged right in. Turn the key on and you can hear it already working on three, you can hear it working on two and one. Now I have all five speeds. Now we'll just put this bolt up in here. Just put in the most difficult part of the operation. Tighten that up.
The final part is put your cover back in place. You want to push it up in there, you push it up next to the firewall first and I'm sorry for shaking around a little bit here. I'm just trying to film with one hand and trying to push it up with another. Push it up and in first and then make sure you have everything lined up. As you can see here those are the passenger side outlet holes. Make sure those are all wound up, then start your end bolt here and then I recommend starting the one next to the driver side. Once you have those lined up, the other two middle ones go in pretty easily.
We hope this helps you out. Brought to you by www.1AAuto.com-- your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free, 888-844-3393, where the company is here for you, on the internet and in person.
HCA40412
In Stock
Product Reviews
4.0/ 5
★★★★★
11 reviews
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★★★★★January 5, 2024
It works and then some!
Great product, I ordered the wrong one as Suburbans have 2 for the 1 front and 1 rear air conditioners. It still worked by holding it in with 1 screw instead of 2 . ( no one sees it once the cover was back on.) Check your vehicle as mine has 5 fan speeds thIs controls 4 speeds the 5 (the highest) was a direct connection to the fuse box 12 volts, so if your highest setting is not working, check for a fuse. This was my case, as this reduces voltage more and more at each setting to adjust your fan speed. At top speed your fan just connects directly to the full 12 volts and is fused. Hope this helps someone.
★★★★★August 25, 2022
Excellent
I installed the part very easily and it worked as advertised!
★★★★★January 11, 2020
Heater/AC blower fan resistor and cabin filters.
Resistor fit like a glove and easy to install! All fan speeds work again.The cabin filters looked of good quality but a little difficult to install.
★★★★★August 16, 2018
The part did not match with the old part. The screw holes did not match. I purchased part with assurance that it would fit. I am back to square one.
★★★★★May 2, 2018
Blower motor resistor with Plug & pigtail
This was the first time I've ordered through this company and it was the most professional courteous experienced company I have dealt with in a long time I highly recommend their service and their parts the part was delivered in 3 days fit perfectly and it was complete I am very satisfied with this company and I will recommend them and continue to purchase through them
★★★★★November 26, 2017
01 Silverado blower motor resistor
The resistor works perfectly.it was simple to install,I I think it took maybe 5 minutes in all. The price was great and fast shipping.if you're missing some speeds on your blower motor switch this is your fix.
★★★★★October 25, 2017
Wrong part
It was the wrong part but i made it work waited way to long to receive order
★★★★★September 11, 2017
Great fit
Thank u all for quick response and great product thank you all
★★★★★July 31, 2017
good product wrong resistor
The wiring is easy but the resistor does not fit the 2006 silverado 2500hd
★★★★★July 2, 2017
AC now works but they shipped me the wrong resistor
The order arrived fine. Parts looked good, just as described. Problem is that they sent me the wrong resistor. So I had to use a big ole nasty washer to hold it in place. That part of the install sucked. But like I said the AC now works. Their website said the part was compatible. But failed to mention I would have to rig it to fit.. bummer..
Showing 1–10 of 11 reviews
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WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
