Chevy Trailblazer EXT Blower Motor Won't Turn Off 

Eric, I have been a tech for 35 years now. I watch your videos whenever possible. Everything you say, I can relate to. The logic, the humour, the frustration... I find myself chuckling with you every joke you make. It's all so true. Thanks for everything. You really make a difference in this world. Keep it up brother.

I watch a few Mechanics on here and your the only one that does the best job on electrical, great job..

The best fix-it video I have ever watched! A real person with real emotion addressing a real problem, INCLUDING the repair parts....thanks a load for your effort, now I've just "GOTTA GET PAST IT"

Exact Problem in my daughters 2007 Envoy with 120K miles on it, exact same problem with after market part. i would have never found the problem without this video. I followed the procedure in the video and it worked out so perfectly that i didn't have to stick the extra foam from the seal to bang my head against it! thanks Eric!

Great videos with a talented mechanic; down to earth, great humor, family guy. I love this channel!

Be yourself. You are a good down to earth mechanic making your way through this jungle of manufactured junk.

The struggle is real! Hate when a repair is extended by having to fabricate a new replacement part! Grrr! Great Vid! You and ETCG are my favorite mechanics on RU-vid! Thanx for all the vids... Very helpful information!

I don't know why youtube is throwing these old SMA recommendations, but it's good to watch..... My, how you have become so much more enthusiastic since then Mr Eric O ... :) Bad days happen, and there is no shame in showing those days... Actually it's good to see someone show that mechanical/electrical repair are not always roses and sunshine. Keep up the always awesome videos, whether good or bad results.... or frustration, anger. Your subscribers and patreons show that we love you..... Wish I had a tech' like you around here.

Omg I totally forgot what I was watching you for you sounded so much like me always complaining about people that work in customer service slash products slash whatever a so relate anyway you're great to watch again I forgot what I was watching you for . You just have that personality that just draws you in thanks

Because if your video I fixed my trucks fan clutch on my 2004 Buick Rainer. Thanks for the information and how to diagnose the problem. Appreciate your knowledge and the videos. Have a great day!

I'm doing a 2003 gmc Denali tomorrow and looking up the part now. Ordered the AC Delco part because napa was $45 more than the dealer part. Thanks for Another informative and funny video.

I've come to the conclusion that you don't make these videos for the rest of us. These are just therapy for you. I agree with your comments 100% though. The replacement should be just as good as the OEM but they never are.

Eric, absolutely the best ever. The whining, the bitchin', the moaning all things of beauty. This is humanity at it core. Even if I hated car repair videos I'd love this one. Tell those kids to get off of my lawn. Loved it.

I LIKE your videos I too own a tire an Auto Repair shop And when i'm not positive about a problem I watch one of your videos and you usually confirm what i was thinking. Your better than me with electrical. i'm not bad for having no auto school training but i can usually fix anything that rolls in. I can totally relate to all of your whining. i have all the same problems. But why i'm here is because i like them crimp an seal connectors. now on my mud dragster i solder everything. .we could sit back and drink a few an tell some stories. i'm south of st louis Thanks for the video I;M Z-MAN

Eric as I watched your video and you went to the "replacement" part I actually knew what was next. I have an 06 Chevy truck that had a no blower issue. Replaced the same part and had to rewire it also. Thanks for the humor!!

Had the identical problem with my 03 Trailblazer. Your post made it easy to perform the fix myself. Saved me from being raped by the dealership. The AC-Delco part was $60 from Amazon. THANKS SO MUCH FOR YOUR HELP!!!

Love the wine Eric. Especially if there is a little cheese to go along with it. Lol. Who hasn't heard that one, a million times. Actually for some reason, most DIYers think the pros never really experience that after market problem, because they got a magic parts connection or something that prevents it from happening to the pros. When you see the guy who owns the shop experience the same exact darn problem and handle it the same way they did, there is a sense of comrodery in that. At that point, two people of differing skill levels are brought together for a moment, where they both can agree, commiserate together and be on the same playing field for a bit. That's one thing your viewers get to experience with you, because you keep your videos basically uncut, as far as oops's and mistakes are concerned. We're all human and make mistakes, and the aftermarket parts devil comes up and bites us all from time to time, it's inevitable. You can walk up to anyone and tell a story about a new part not fitting or being bad right out of the box and most people will tell you their story to match and will have enjoyed talking to you after you leave. That's called commiseration, shows your human and is a great thing to do when you run into problems like that. So keep on keep'in on and we'll keep on listening because that's what makes you real to your viewers. Take care and whoever said you treat Mrs O bad is wrong. But there are some of those little jokey moments where you put her on the spot and we can tell that you heard about what you did wrong when the camera got turned off. But that happens to us all. Some times talking to the wife is like talking to an alien. Please take me to your leader, and if they only could, than we could talk to ourself and agree 100% with what was said. Take care, spoil Mrs O because she's a hard working woman and make the kids and dogs, laugh and bark, because that's what it's really all about Charlie Brown! :) Jpol.

Thank you for your video. I always thought it was just me when running into problems when working on my vehicles at home. I thought mechanics just zip, zap, and done with no problems but now I feel more normal knowing it isn't just me.

After watching your video a couple of times, I installed this on my wife's 2005 Buick Rainier. I was very skeptical at first, but it wasn't that bad after all, and it worked. I used the AC Delco brand. Thanks for the help.

Big thanks for this video! My neighbor's Trailblazer had this exact problem last week. It killed the battery(original from '07, wouldn't charge). Swapped the battery and blower came on immediately. I popped the blower fuse (35 under hood), so she could drive it until I got the part. I got a duralast part from Autozone, and the wires were long enough to hook into the factory position. Searched and found your video to help swap it out. You helped make it a VERY easy swap, and I got a good laugh at your commentary!

I love to hear you speak the truth about the after market parts like that. I've ran into it myself and it makes me swear through the rest of the job and usually half way through the next day, telling everyone about it. I would also like to let you know, that in the fields of plumbing and hvac they are experiencing the same thing, with the same results as you just experienced. Wasted time, modifications that shouldn't have been needed and also test the level of your creativity are usually the result. It's the way of manufacturing and until some big shot decides he can make more money by having everyone buy his parts because they are manufactured correctly, it isn't going to change. But keep ranting about it because were ok your side Eric. Thanks for the videos bud. Jpol.

Very entertaining and informative. I pulled fuse outta wife's Trailblazer tonight. Attempting to fix tomorrow. Hopefully I have a sense of humor as you did during installation. Awesome video! Thanks!

Still enjoy these earlier videos. Over 3000 subscribers. LOL - Congrats at 690,000 subscribers as of today. On your way to 1 Million!!!

You the man nice to see how you overcome challenges and I thought this stuff just happens to me! Nothing worse then buying a new part just to drive an hour home and find out it’s the wrong part!! There’s just no quality control anymore.

Eric, Thank you, Thank you, Thank you! My son is working gobs of overtime right now and his wife called with this same issue on their truck. I would have not known how to help her besides disconnecting battery or removing fuse. She stopped by and it tested just like you showed. I removed the module so he can go get the replacement part and we will put it on in a couple days. For now, at least, she doesnt have to worry about the battery running down or having to pull the fuse.

Eric, you are killing me! You had me lured in, thinking you discovered a special harness stretching tab that would extend reach. Then Bam! Sideswiped by Eric O humor again! You don't play fair my friend, making me laugh out loud loud in front of my wife. She didn't get it.

Wow Just watched this today. A throwback episode that popped up in my feed. Only 3k subscribers 8 years ago now he’s got 800k + Awesome channel

I have always looked at inside crimped on ok! outside solder heat shrink. good job keeping the video!

Was and still having issues with my blower motor but this video was great was busting a gut with all the comedy and feeling better about my issues. And by the way first time I took time to comment on any video.

Hey Eric, this is my favorite video at this point in your blossoming RU-vid career! This is where your funny side came out 🤣. I think everyone can identify with you, and that's the point. Thank you so much for sharing and I wish you and yours nothing but good fortune. o yeah, I forgot that I'd watched and commented on this video 3 years ago..

This is why we cant compete in the market. You call to help fix a problem they do not listen. The poor service is another issue. We at one time were interested in helping the customer that is no longer the case. You are a gem in todays world.

I know this is an old video but I just found it to help me figure out why they dont just make the same one. Yes very aggravating to work with aftermarket parts and the companies who make them. I've made my fair share of calls and emails to have the same results. Love watching your videos.

You have a worlds worth of patience. I'd of taken a step back and blown a hole through that piece of plastic trash. Great video, then again, all your work is a notch above most. Thanks.

Dude! You helped me SO MUCH!! I found myself in the same exact situation as you with the short wires. You're the only person who I have found that ran into this. I'm by no means a machanic, I just don't have any money and I have to do it myself. Thanks so much for making this video to help stupid poor people like me. You're the man!

You were cracking me up today. Had to run it back and show my wife!

Have watched a lot of your videos, definitely have learned a lot i didnt know. Thank your for your time. Just wanted to say the module may have fit if you used dremel on corner of mounting tab. The n flipped it. Kind of like installing aftermarket radio kit.Thats why they give multiple holes i think to cover there end. I Probably wouldn’t of thought of it either at the time of working on it. You are an awesome tech doing it the way it should be done. Ill feel your pain too. Keep on keeping on

Awesome video! This was EXACTLY the problem with my 2005. I kept searching for one that had a 3 pin socket. Ended up figuring it out that I could use one with a 5 pin socket with a 5 pin pigtail (supplied), duh only 2 pins hot plus small purple one needed, plus splicing, Anyway the dealer part wasn't even AC/DELCO, product of Mexico/Korea with GM approved gold stamps all over box. Thanks again

Made me bust a Gut Laughing, Great Video of a real repair, I feel the frustration and feel the pain. theres always something to piss you off. but I keep plugging along and make it happen. Thanks for the video

lmao...You see... That's why I watch videos like this. It's the only way to find out what that little leftover pad thing is for. Awesome!

Hi Eric thank you so much forxthis video. I am no mechanic butxafter watching this videoxi was ablexto locate and find the fuse to stop the fan. This allowed my husbandxthe time to fix the problem. I cantxthank you enough

Your a Gem Love it, Great Vid, now I can try to fix my Brothers No Shut off fan problem. You should be a Marine mechanic with same troubles on parts, luckily I always ordered OEM parts from the Marine Distributor. Thanks so much.

I know this wasn't much fun for you, but I freakin' loved it... lol. Great comedic relief!! Good video Eric O. Way to go.....

Just purchased this part and found out it was too short! I luckily I found this video and as I also bitched, I did get it fixed, your way. Thank you very much for this video. I will refer to this channel from now on.

Hi, I ordered part # ACDelco 15-81773 GM original equipment heating and air conditioning blower control module from Amazon.com. $56.82 plus shipping and sales tax, if any. After watching your very good video, I was aware of the possible issue with the blower motor lead being too short. This part number had more than adequate length to fit in the clip behind the blower motor housing and reach the motor connection. It was an easy install in a friend's 2004 Trailblazer. What a great job on the video, and I agree with your comments on the lack of support when a part does not fit. Although, I have to say, without challenges to overcome, how satisfying would life be. It should be right, though. Keep smiling and I'll check back on my next adventure.

Your circus is your job security. The bigger the circus the more security. You have to love it. Good video's BTW.

Thanks for the information. I have a 2004 Envoy that the blower stopped working. I will check the restore pack since it started blowing when the key was off and then quit all together. I worked on CNC and PLC Controlled equipment till I retired. Never worked on cars electrical, which is very different then what I did. Also found problems with manufacturers over the years.

Excellent talk about cost effective quality control. A certain rate of failure means reduced costs.

I watched this video as my trailblazer is having the same exact problem, took your advice and bought the OEM part directly from GM, and to my surprise it's the exact same part you got from Napa hahahaha. Looks like I have a future of cutting and splicing ahead of me..

Good comments on the part fit vs. OE on aftermarket parts. I am very familiar with part sourcing with suppliers. Our process is this: we almost always use Tier 1,2,3 suppliers, they are usually the same suppliers that make parts for the new car build. We send them the blue prints for the part we need, they model it up, send part to us for engineering review, if part passes engineering review and testing, [extended durability, fit, finish, internal component specs] we sign off and release supplier sample for production. We then take 50-100 of the first production run and test all of them, to include tear down to verify manufacture to print. After this, we green light the part for release to commerce. The extra engineering, testing, validation steps add cost, but the part is right when we release to commerce. I was a tech 35 years ago and learned quickly on the difference with OE vs. aftermarket. It is hard to get the OE spec part today depending on where you are and the available part suppliers.

Awesome Video! I nearly fell of my chair laughing at the Stick On Head Cushion "Beat Here To Submit New Design"!! I had to re-watch after I shared it. Keep On Keeping On you ain't alone when it comes to Test Connectors.

I'm starting to think that filming your work is a good stress reliever for you, Eric. Free therapy! Too bad more parts don't come with pads to beat your head on. BTW I'm a big fan of the crimp connectors. They have saved me many times. With the right crimper ( I use some made by Chanellock) it's had to get it wrong.

Thanks for the video, another day in the Life,of a hardworking mechanic. Cheers.

That's an awesome video! Now I know exactly what I'm doing . I'm not even going to test it, I'm just going to get that part you rock brother 👊

Wanted to say thank you for this video. I had a similar, but not exact problem and your diagnostic technique helped me isolate the problem on my TB. PS... the Delco part I got had more than enough slack for the blower motor wire, but still needed to do the splice into the orig. wiring. Seems like all replacements are like that for this part now. Thanks again!

We here at make pretend big corporation greatly appreciate your videos and at the make believe devision of make pretend corp. we care how you feel about our superior products and our make you wait division has referenced this as a study piece for the new division we are creating called the make it stop division, again thank you for bringing this to our attention it will grow our brand and company in a direction that makes all you do worth all our effort in advance enginnering. P.S. Here is a lovely sticker for you to beat your head on.

I love the rant in this video. Bringing a mechanics world to everyone!

I have the same issue on my 05 Trailblazer. It just started out of nowhere. Thanks for the video

Why is your complaining so entertaining. Still teaching even when things are not going right. we appreciate your patience.

"few french fries short of a Happy Meal". If this mechanic thing doesn't work out, you can always become a comedy writer. It's a Chevy that's your Problem....lol. Love your comments and impersonation of 'Patrick the helpdesk guy'.

I remember changing an AC compressor on a 95' buick roadmaster. One 10mm bolt made the job 3 hours instead of 30 minutes. So, NO, you are not whining. All that you said was necessary for the job. Lol. Good video.

really enjoyed hate you had problems but glad you share your troubles shows we aren't the only ones

That was really helpful, thanks! Bought one from Amazon for $54 so I went a few days without heat. Just my luck it went out in the middle of a Michigan winter but I am warm now!

This video really helped me and I will be ordering the parts tomorrow and installing it myself.

this "upgraded" version of the blower motor resistor is the way to go. initially, i went with the exact same looking one with the couple heat fins, lasted a year or so 😑. the extra time and frustration of replacing it with the newer version is worth it. several years, no issues. 👍🏼

Just today I replaced a window regulator (Dorman) and the new part worked about 12 times then the cables broke. Chevrolet wants almost $600 for there part so back to Dorman we go. I hate crap parts but I hate overly expensive parts more. Great video Eric. I've been enjoying all the diagnostics and repairs.

Nice video. just replaced my module in my 06 TB. got two at a junkyard that were DOA. then found a acdelco part brand new on amazon for 55 bucks. worked a charm and the wires were long enough!!

thanks for video I replaced mine in just a few minutes and it works like a charm. Thankfully I did not have t0 splice mine

You are so true aftermarket parts are the worst because they cost you're more in time and aggravation but good job I like when you wind a little you deserve it again great job

I did like you said and the problem is fixed ! ! I did get the module from " standard" - ( red box ) and sure enough - wires about 1" to short ! ! so did like you did, " splice" Thanks for the vid-! !

Thanks for the info and for being real with us! Great work brother.

Thank you for making this video, because of this video I was able to fix mine! I really appreciate it!

I'm going to start making a list of Dr. Eric's quirky expressions. Today's "A few frenchfries short of a happy meal." that's greatness!

Great vid...it's like haning out at your shop BS'ng with a friend. I learn something new every time. Thanks!

Eric the Gm resistor is the same way. I always forget to quote out time for the rewire and I'm as frustrated as you are. Gotta love this field

I sure was glad the blower worked after the wires being to short. Usually with my luck the part would be bad to. :) Great video!

Just Found this Video when my 04 Chevy TB Blower went out in Feb 2017. Found it use full and entertaining. Keep up the Great work. will check out your other Vids. Cheers

Loved the bang the head on the door, Darn near laughed to death, Best way to handle stuff like that for sure though.. Considering what you had to go through with that crap part, Sure did come out pretty clean looking, Nice repair..

Checking out some of your older videos! Thanks for making them!

2 French fries short of a happy meal. Excellent choice of words. The absolute frustration of todays aftermarket parts.

To answer your question about solder or butt connectors....I have always soldered and heat shrunk....Love the little pad idea.

Thanks for the help, I treid to change mine . Got new one at NAPA. Didn't work. I went to my fav shop McDonalds Auto Repair Hebron Ohio and it was the small black relay that is next to it on Chevy S10 2000. LOL the last shop that looked at it gave me a 2 hr estimate to look in the dash LOL.

love your videos and the humor you add to it .laughed my butt off !

Thanks for helping me be my wife's hero. "How did you fix it?" ..."Oh, just me and the internet, no worries ..."

I got to do the exact same thing tomorrow with my 06 trailblazer the way I'm going to do it is the way I took it off too tight to unplug these wires while they're locked including blower motor unscrew the resistor let it dangle hopefully I still got the same length of wire for the new part that I'm getting wrap it around and then screw in the resistor very good videos though I love watching your program learned a lot on other stuff

I feel your pain Mr. Eric O.!!! My advice to you is to adapt, improvise, and overcome!! And Sir, keep on pressing on!! :-)

Great vid. I appreciate the heads up on the NAPA part. I found the same part I needed for my 2005 Buick Rainier thru RockAuto.

I had the same problem, 2003 grand am,your replacement module looks like mine, blower motor bearing failure caused excess current flow through power FET switch at "resistor module" causing it to short and keep blower motor running until battery dead. Car belonged to niece and dead battery stranded her once already. I wanted a reliable repair and was tempted to replace module with a toggle switch. I instead ordered power FET from Digikey about 4 dollars and saved 80 dollars by repairing the module. The IRFBA1405P is a power MOSFET designed by international rectifier for automotive applications. You will need a hot soldering iron, the PC board sinks heat well. The MOSFET is the large 3 terminal device that is pressed against the finned aluminum heat sink. Melt a little solder on the iron and apply iron to all three FET leads, flow a little solder onto iron and leads to help conduct heat and when all solder is liquid FET will lift off. then flow all excess solder off this footprint use solder wick if U have any. trim the leads on the new FET to the right length and position the FET on PC board and solder each lead. Make sure no solder is Bridging any leads together. The FET is mounted face down on the PC, this is so the back can contact the aluminum heat sink. Thermal Heat Sink compound must be applied here to reliably conduct heat. Heat sink compound can also be got from Digikey or oddly best buy. You can maybe salvage old compound. Digikey is a large supplier of electronic components, been around a long time, they ship large qty or just one, I don't fear giving them my credit cart number. And my part came in 3 days normal shipping. I still had to pay 80 dollars for the blower motor but I could not fix that. If this were my vehicle I would have just replaced the module with a toggle switch, easy and reliable repair, but so far blower is working fine after 5 weeks.

I'm having the exact same issue with my 09 Impala. Thanks for the video. Now time to get it fixed.

Oh, i love this video, worked on trailers for 20 years, i ALWAYS ran into the same problem on trailer air valves, why in hell cant they just make the same valve they installed at the factory??? But NO, they always got to move the air line ports to the other side of the valve!!!!!!

Great channel, so glad I found your videos are great, very engaging, and entertaining, thank you.

Thank you showed me a lot to fix my 2003 GMC Envoy xl

dood brother O this was one of your best had me rollin and i loved the rant on them uppity engineers in our trade not wanting input from from some lowly MECHANIC out in a field to improve a service or product and i loved the blower diagnastysios

I like your videos Eric. BTW i work for Napa and I understand your anger , the customer does not pay for the extra time it takes to install aftermarket parts.

As with any blower motor issue, which could be either non operative, single speed only, or stuck on, the resistor module could be the most likely cause of the malfunction. However, you also must include the thought that something probably caused the module to fail. If they run cool, they could last the life of the car. Usually though and after about five years or so, the blower motor bushings start to dry out as they are made from a self lubricating material called "Oilite". Oilite is used in small motor designs exclusively. It is a sintered bronze and oil mix bushing and will eventually wear and bind the blower motor shaft. Furthermore, the carbon commutator brushes have worn down by now, causing a pool of carbon powder shorting the commutator up and slowing the motor down. A stiff spinning motor shaft is a good clue, so check for that. Give the fan a good spin, if it stops very quickly, it's motor changing time. The increased currant draw from the tight motor shaft, over heats the control module (mosfet) component to it's failure point. Always change the blower motor along with the control module if it's an easy access design.

That's the universal model you got Eric, at our store we carry all three options to help the customer

Man o Man... you are a comic, I've told you this before, but the rubber head banging pad was the one that would've been your money maker on the comic circuit . I still think you should put in the bleachers for the public. You have the talent, you just need a manager.

Great video! Very realistic. I’m gonna check you out for my next issue. Prolly tomorrow. I appreciate your help

WOW!!!...I was surprised that it actually worked. I was expecting it to not work. Would of loved to hear what you'd say if it didn't work or was missing a speed. Either way, glad it worked out but you know it'll be back sometime, Gotta love aftermarket parts! keep up the great videos, you da best!!

I find it useful to not cut the original harness so far back...lol keep up the good work.. I enjoy your vids

Excellent video. I fully sympathize with you. This kinda crap happens to me every day as well and it's very frustrating. The mindset where I work is to repair everything as cheaply as possible so sometimes the crap we get is even worse than the part you got. I always say that my hair didn't fall out, I pulled it out. I usually solder and shrink tube bout 99.9% of the time. It seems that every time I get lazy and use butt connectors it comes back to haunt me. Keep smiling {:-)