HOW TO FIX BLOWER STAYS ON Chevy Trailblazer / GMC Envoy EASY DIAG/REPLACE FAN STUCK

[@proudamerican7536]

This was hands down the best repair video I have ever watched. No bs just accurate facts and directions.

[@terrymotley-smith1222]

I just did this to my 2007 Buick rainer and it worked thank you

[@cjf3838]

Great video and it helped me diagnose the fan control module was faulty....but my problem came back a week later. Blower doesn't turn off when key is removed. Could I have gotten a bad module or did something else likely cause it to fail again???

[@nutsandbolts7407]

Great help great explanation

[@ventureswild1228]

Exactly the info I needed. Thanks

[@NoNonsenseKnowHow]

On Amazon: *BLOWER MODULE: amzn.to/3awI8q8

[@meidamx]

NoNonsenseKnowHow The Amazon link doesn’t allow 2006 Trail Blazers or newer. Will a 2005 work?

[@brianclark6340]

NoNonsenseKnowHow thanks for the info! So mine was doing this but now it doesn't blow air at all anymore. Would this still fix my issue or did I do more damage at this point?

[@polishedhorsesales]

Hi, thanks for the great video! My boyfriend replaced both parts and the fan is fixed, but now the A/C only blows hot. Any ideas?

[@polishedhorsesales]

The passenger side only.

[@aniorbis]

Me salvastes el dia! Gracias!

[@ashleycoleman4268]

Awesome video. But question, my front control doesn't work but back does, any ideas for an 06 trailblazer

[@stephenforsyth106]

I’ve replaced both them parts brand new and fan still stays on 🤷🏻‍♂️

[@marshalllaw4116]

The plug disconnect at 3.18 could be more in depth,because it's not as simple as pushing up on the bottom and pulling it out.

[@dunnoo7]

Liked and Subscribed!!! 100% to the point no BS and even mentioned the socket sizes. And a bit of info on the PWM too.

[@ThePhiRexian]

Even a mechanically incompetent chimp like me could fix this problem thanks to your video. I appreciate you doing this greatly.

[@robertbragg9364]

Thanks for not making it more difficult than it needed to be. Quick and to the point.

[@mikeparson7704]

Awesome video. Love that its straight to the point and no b.s. just happened to my 2007 Trailblazer SS right now. I pulled the fuse under the hood to stop it for time being. Thank you for taking the time to make this video. A huge help.

[@stupacx3192]

I just need to figure out which fuse it is

[@jayalexander3876]

Fuse 34

[@tylersgarage1872]

Thanks for the video! I ended up making a video when I fixed my 2004 GMC Yukon Denali XL

[@A.D455]

Good im gonna try this my 2004 gmc envoy did it 2 day wen my suv was off u can hear the blower still running wen I pulled my ground wire 2 my battery it turned off an wen I put my ground wire back on the battery the blower came back on

[@DM-qp7do]

This video was exactly what I needed to see, I watched a couple others that were horrible. Thanks man, I need to do this on my 05 GMC Sierra 🇺🇲

[@dr.j1217]

Great video - Fast and to the point. More helpful than the ~stupid~ owners manual. I pulled EVERY fuse (5) in both boxes & 2 relays that had ANYTHING to do with Fan, HVAC, & no go. This AT LEAST gave me a workaround.

[@DM-qp7do]

And 3 years later I have to say it again, THANK YOU for this no bullshit video. I hate it when people go pet their dog, go get the mail or just start talking about random bullshit. I really appreciate it.

[@jameshodges3180]

Mad props to holding a phone while doing everything with basically one hand

[@joemccormick9348]

Wtf... Mine has 126000 miles and it just did this.....

[@tacampbell]

NOTE: There are two styles of resister part - One for heating systems with automatic controls (as in this tutorial) and one for the models with manual controls. They are not interchangeable. And the prices are WAY different - $35 vs $105. Text lookup under "Blower Motor Resistor" at your local auto parts store but make sure you get the right one for your type of heating system. Also, this video doesn't show the re-assembly, which is not straight forward. None of the current replacement parts are a plug-and-play replacement - they all needed some splicing. Instead of a built in pig-tail plug to the fan and a female plug for the control console wire plug, (with the thin purple line) my replacement unit had a 5-line female plug on the body and came with a snap-on pig tail that had the 2-line connector to the fan, and 3 bare wires (red, black, and purple) that I had to splice onto the existing 3-wire line from the control console. I used quick splice connectors - the thick wires used the blue size, and the purple used a red size. A PITA when working under the dash with the door open on a cold winter afternoon, but not all that difficult. Never-the-less, once all wired up, it solved the problem. Thanks for the video NNKH!

[@novemberflag__8251]

Thanks for the heads up.. exactly as described.

[@FilmJunkieOutdoors]

i’m having this problem right now. all i can find is manual a/c resistors for 2002 gmc envoy.

[@willsteele9249]

by far one of the best auto repair video on youtube great job...... straight to point.

[@ch1ckenphat514]

Literally watching this as my vehicle just started doing this.

[@ch1ckenphat514]

Ffs. Its the resistor module.. AGAIN. Leave it up to chevy to create a complete piece! Back to the scrap yard tomorrow.. because guess what, its a discontinued part when you have auto climate controls. F*ck.

[@ch1ckenphat514]

And don't get me started on the fan clutch. .

[@crackymccracker8643]

Do not watch final destination

[@dansilverman2987]

Same ….

[@peggybell2533]

This just happened to my 2005 Chevy trailblazer and I want to know if I disconnect the blower will everything still run properly like will I be able to drive it until I can get another blower or no

[@NoNonsenseKnowHow]

yes

[@wadecollins3014]

Great video! Wish I found this video instead of the other one I was following.

[@josephmonrroy1877]

Badass video. Love the no BS straight to the point 👌

[@ritaleslie8645]

Thank you Very much! This happened to me when I got to work today. I work 10 hour day's. So I pulled the fuse for a quick fix. But will be doing this in the morning. Quick & to the point. I will be checking out more of your videos. Yes I am a lady that works on her own Envoy 2005 8 cylinder 4 wheel drive. God Bless you! Keep making videos Please!!!!

[@NoNonsenseKnowHow]

Awesome to hear you're taking care of things yourself Rita! Thanks for the lovely comment and good luck on the repair! I greatly appreciate the support

[@martieone1]

Im having a hard time popping the purple and black connector. Cant see clearly how you took it out

[@NoNonsenseKnowHow]

It's been a while since I did one of these. If he get in there with a flashlight you should be able to see how it's connected. Sometimes there is a lock that you have to slide over and then press the tab in. Or every once in a while they will be melted on the inside and very hard to get apart because the plastic has melted together

[@htown2pa365]

I have an 07 envoy and I'm looking for the correct name of the part underneath the glovebox because the gents at my auto part store couldn't find it and I cannot find a part that seems to fit

[@NoNonsenseKnowHow]

are you talking about the blower transistor?

[@galindoelizabeth8442]

My blower stoped working replaced blower resister and now it works but it stays on wen the vehicle is off

[@NoNonsenseKnowHow]

sounds like a faulty part

[@Learningmorw7805]

Not posting this everywhere, but possible fix. Hummer with automatic temp control, blower motor staying on after key turned off. Passed wire voltage testing. Had to buy the "upgraded" fan resistor.... Cut and installed the new style plug that fits the new module. Works!

[@KirRik-ib3gg]

Just saved me a headache. Fixed my problem in about 5 min after watching this quick video. Thx

[@sergioflores7169]

I needed the info for diagnosing between a bad hvac unit in dash or bad blower motor control module. This made it easy, thanks!

[@mrajj1261]

I'm buying a trailblazer with this problem thanks

[@NoNonsenseKnowHow]

no prob!

[@wickedlokz1849]

I replaced that and it still stays on

[@mtr65]

Finally !!! This is the definition of tutorial.

[@truckerj8717]

THANKS FOR THE ADVICE. YOU WERE 💯% RIGHT.... MY 2005 GMC YUKON XL DENALI WAS DOING THE EXACT SAME THING. THE PART WAS $110.00 FROM AUTOZONE BUT THAT EXACTLY FIXED IT IMMEDIATELY. IT TOOK ABOUT 10 MINUTES TO DO EVERYTHING FROM START TO FINISH. THANKS BRO! I HAD 7 MECHANICS LOOK AT MY TRK AND THEY COULDN'T FIGURE IT OUT BUT THEY WANTED TO CHARGE ME A HELL OF A LOT MORE THAN $110.00. I'M A FAN NOW👍😁😁😁😁😁😁😁😁😁😁😁😁😁😁

[@jebbohanan2626]

I just replaced the resistor on my 2004 Buick Rainier, with the climate control system. I worked perfectly for one day. I’m not going to spend anymore money on it. I will just use a 40amp fuse and a 40amp switch to straight wire the fan to FULL ON. All this technology is great if you got loads of money to keep it going. But, honestly, old school is the best.

[@MrBernie59]

Dude you need to slow down when showing the problem. Are you on speed?

[@bonithyah613]

Lol

[@tlbradford]

Great video. Perfect tutorial on the ground currents. Saved me a ton of time. Thank you.

[@jennifergilbert7631]

Thank you I had no idea wth was going on with my ac this helped alot

[@willhewitt2218]

Well done and thank you

[@johnpulido3048]

I have the same problem in my 05 Buick Rainier would diagnose it be same ?

[@NoNonsenseKnowHow]

More than likely yes

[@johnpulido3048]

Thank you sir👍

[@DM-qp7do]

Aaaaand im back 3 years later for my 06 Trailblazer SS. Changed the control module 6 months ago and it was fine. Now its doing it again. I replaced the module again and it worked for 20 seconds. Now im replacing the blower motor and resistor. As soon as it stops raining. Fuck.

[@MJS.28]

Thanks for vid. Fyi when people measure the purple from red youll see the voltage fluctuate. That lets you know the pulsed width modulation is working coming from the climate controller, therefore its your blower resistor module like he said in the video.

[@rlvtrader]

Thanks for this. Mine was fluctuating and not at 0 (just near it). When I increased the fan speed on the controller to max, the voltage was over 12V between these 2 wires, which made me think climate controller was doing what it was supposed to do. I'm going to buy the resistor module, fingers crossed that totally fixes it.

[@MyLifeThai371]

I did the permanent fix for it my blower motor turning off and on intermmitently on my 2003 Silverado. I bought an "add a circuit." I bought the 30 amp one. I pulled the 30 amp fuse out in the cab for the heater/AC hvac system and plugged in the add a circuit that has 2, 30 amp fuses in it with a pig tail coming out of it. I connected 8 ft of 14 gauge electrical wire to it with a butt connector. I ran the other end to the blower motor on the passenger side of the cab. I cut the pig tail off of the blower motor(the blower motor just has 2 wires coming out of it. A red and a black wire. I connected it to the red wire. The black wire on the blower motor I connected an eyelet to it and connected it to one of the glove box hinge screws which was a good ground. I cut the 8 ft piece of wire right above the transfer case shifter and installed a toggle switch from walmart. Now I can turn my blower motor off and on with that toggle switch. I only have high fan speed, but I don't care.

[@maurice5249]

What about the fuse underneath the hood? Can you just take it out?

[@NoNonsenseKnowHow]

Probably yes

[@zeidalyassiry6359]

Thank you so much I almost never Comment or like or sub to anyone or anything on KZbin but you saved my car in middle of night with -30 degrees holy shit now tomorow I’ll take it for repair at least now the fan is not going to run all night omg thank you

[@NoNonsenseKnowHow]

So happy to hear the video helped you get out of a jam. Really appreciate you dropping a comment to. Thank you. also It's not a bad repair if you decide to tackle it yourself.

[@maddmavic]

Mine just did this today

[@billyboicatfish]

So I have a similar problem but if I turn my car off the blower/ac fan turns off too. But while the car is on the fan blows full blast and won't stop. Should I look at the same parts also?

[@oneshotdslr6997]

Help?? I’ve replaced both the Climate unit and the blower module. Still won’t shut off. Going crazy

[@NoNonsenseKnowHow]

Does it turn off when you unplug the module?

[@oneshotdslr6997]

@@NoNonsenseKnowHow ya. Just for shit went and bought another new blower module and she works!!! I guess I had gotten a bad one

[@NoNonsenseKnowHow]

@@oneshotdslr6997 nice, glad to hear you got it figured out. Appreciate you updating as well! Thanks

[@steinDeath]

So, what if you replaced both the resistor and the hvac control unit, and the blower motor still runs full speed. My current issues are .. Blower motor keeps runing with key off. ( replaced resistor ) Replaced hvac control unit. ( still sends pulsing ground signal to the blower with key off.) and changing the air outlet from defrost to front top to bottom does little to change the airflow. 2007 chevy trailblazer. ac unit has the LCD.

[@jmaxs77]

My 2003 Bravada has this exact problem. Thanks for the fix.

[@rooseveltrainesjr7618]

Thanks for my video my o5 gmc Yukon just started. Fan not blowing high . Running when I cut key off

[@brandonblake1723]

So I got a 2000 blazer LT with this issue I've already replaced the blower module it still stays on. Is there a video on how to test the climate control module? Nice strait too the point video I do like that didn't know how much I'd like nit until I seen yours.

[@runpuppyfpv5744]

Intresting situation how do you test if its intermitent ? I replaced the module/resistor now the motor pulses during operation sounds sorta like a bad actuator but not . when the old module/resistor works no pulsing during motor operation it runs smooth in thinking i got a bad module .

[@melisvarland1132]

Great video. I replaced the blower motor module and the fan stays on and kills my battery after every rain storm. When it’s dry out… the truck runs great. The mechanic ran a hose over my truck and can’t find a leak. Any ideas?

[@mystic24100]

Thanks , I will check my truck tomorrow. Love the no BS video.

[@weisoman5323]

Used my multimeter and the touched ground on the purple and red on red and my meter read 0.04 when I used the 20v settings. That means it's my blower module right? The passenger one

[@RJustinPatterson]

Thank you for the knowledge! If it’s the climate control module, is replacing the whole digital unit the way to only way to fix that?

[@tommyvinson5612]

When my blower motor got wouldn’t turn off I found the blower 40 amp fuse under the hood, When removed it stoped,great video,

[@johnnyp301]

That was my problem, took Tahoe to a car wash and had a bad seal and water got all over it, thanks for the video.

[@NoNonsenseKnowHow]

No prob! Glad it helped out

[@melisvarland1132]

Hi, same thing is happening to my Chevy suburban. I can’t drive my truck after a rain storm or car wash. What seal did you replace?

[@nicoladitomaso7436]

Thank you for this video saved me a lot of searching for what was wrong absolutely awesome

[@gabrielgomez5199]

I just changed my resistor because wires were ripped now my blower won’t turn off unless I unplug the resistor any ideas what do I do ?

[@JuanGranados-wn7mt]

Thanks

[@maddmavic]

If I just replaced my blower control module most likely it’s the other part but what are the chances that blow control module failed again in less than a few months

[@anthonyc417]

Dude thank you so much. New part is in and my family and I are back on the road.

[@tilzagomez172]

So i have to replace that piece, Im sorry dont understand that much English

[@krillin876]

Mine wont come on!

[@melodyman8484]

Great video and wish you lived in Brooklyn. I'm having this issue right now.

[@joelkilgore1392]

I hate this goddamn search engine on KZbin because I'm trying to look for my f****** rear blower motor not the front one

[@FisherWallofSound]

@ 00:54 I believe that would be pulse width modulation duty cycle. Thanks

[@JeffGoossen-gm7jh]

Your video saved me so much money by doing this myself. Thank you! 3:22

[@ricklovelaec6442]

This just happened to me, I put a hot wire to a switch inside the car, now I know what to look for, and it doesn't look like it's to hard to replace,

[@brittanykeen1802]

Um this literally just started happening...going home to check it out. Thanks to a great step dad I know a few things. Thanks for this video

[@TriniVegeta1]

Didn't shut off when I unplugged the module then what else can it be???

[@KingSmoo85]

Just letting you know you helped a ton. Been a cold winter in kc but now the envoy will handle it

[@tomh5987]

So what happens when it’s the climate control module? Do you have a video for how to replace that?

[@chrisloomis469]

My neighbors 06 Escalade just started doing this last night.

[@davidromero5250]

Just a little unclear. My key is out of the ignition and it keeps blowing. When I do what you showed on the video (key still out) it stops. But when I plug it back in (key still out) it turns on again. Would that be the climate control module? Sorry I know I should be able to figure it out but I’m not the best when it comes to cars

[@NoNonsenseKnowHow]

More than likely it is the blower module. That is by far the most common failure. But the way to verify would be check if the purple wire coming from your climate control head harnedd has a ground or not. When the blower is turned off there should not be any ground on the purple wire. If there is then you have a bad climate control head.

[@davidromero5250]

NoNonsenseKnowHow thank you so much brother I appreciate you and all the help. God bless man

[@NoNonsenseKnowHow]

No problem at all. Good luck getting it rectified. Let me know how you make out.

[@davidromero5250]

NoNonsenseKnowHow absolutely. Will do brother

[@melodyman9162]

This is happening to my Cadillac Escalade. So annoying!!

[@wills2166]

Excellent. Helped a lot. 100% fixed. Used BWD from advanced auto. 2003 Tahoe.

[@JosePerez-oq6wl]

It did

[@JBlNN]

thanks dude, my trailblazer had this issue, watched your video diagnosed the issue and replaced it for $60, have full control now. :)

[@kenreddick6420]

Helped me out big time. Thanks very much

[@NoNonsenseKnowHow]

No problem! Glad it was helpful

[@shaundotson6551]

Perfect! Worked on my 04 Duramax! Short and quick. To the point. Diagnosed in less than 10 minutes. Thank you!

[@zilla5142]

My 2006 GMC Sierra has this problem. Fan stop when I unplugged from module to fan. Gonna take it from here. Thanks for video

[@NoNonsenseKnowHow]

No problem! Thanks for dropping a comment and good luck with the repair. More than likely the module. Very common failure.

[@zilla5142]

LOL. I live in New Orleans, no way can I drive around without AC, this time of year, basically year round.

[@NoNonsenseKnowHow]

Yeah I hear you on that! Hot and muggy down there

[@zilla5142]

Changed out module after a little voltage testing... Yep , I am now ac happy again. Keep up on your helpful videos. Thanx pal

[@NoNonsenseKnowHow]

@@zilla5142 awesome to hear. And yeah man for sure. I appreciate you updating me as well. Consider checking out one of my other videos if you want to help support the channel. Thanks!!!

[@michaelamato6494]

Is it expensive to replace?

[@NoNonsenseKnowHow]

no

[@legendvalley]

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.

[@NoNonsenseKnowHow]

No problem. Sorry to hear you had some troubles with it. Great that you have a reputable shop you can go to. It's hard to find decent mechanics these days that work for a decent rates

[@p5eudo883]

Very efficient use of video time. I appreciate that. Long-winded explanations and inclusions of personal experiences before solutions in such videos are often frustrating. When I'm looking for a video like this, it's usually a matter of relative urgency. I appreciate your balance between brevity and comprehensive explanation.

[@NoNonsenseKnowHow]

I appreciate your comment very much, that's exactly what I shoot for on 90% of my videos. Glad the video helped out.

[@king21w48]

this is a life saver, so now i know what to look for and where to check, i was going to replace both the dash control and the resistor, i still have to check the fan though, just to make sure that its not burned out

[@Rippinlips]

WHAT ABOUT THE REAR FAN? Mine is stuck on Right now

[@NoNonsenseKnowHow]

I haven't personally had that happen yet. But same thing as in this video, you just have to find out where the fan resistor is. Probably mounted on the air box in the rear

[@NoNonsenseKnowHow]

Let me know how you make out if you get the chance. Sorry I couldn't be of more help

[@ludovicohernandez7278]

Thank you right on !! Very helpfull.

[@petedetects7012]

That just happened on my wife's gmc yukon. Thanks for the video

[@NoNonsenseKnowHow]

No prob!

[@tilzagomez172]

Can i drive around with that piece disconnected?

[@ronaldjohnson902]

So what's the name of this part he pulled out???

[@sethcox1003]

Thank you so much. 5 minutes and the fan was stopped. It's below zero where I am and a dead battery would be pretty uncomfortable. I'll check the voltages once I get to my tools. Saved me a bunch if time, money, and frost bite!

[@NoNonsenseKnowHow]

No problem! Glad you found the video helpful

[@angeldelgado7512]

I have the same problem but it's just the vent under the windshield dash do you think it's the same problem???????thanks

[@NoNonsenseKnowHow]

Angel Delgado no that sounds like you have another issue within the HVAC box

[@willfulltruth9720]

If the buttons move but the blower doesn’t turn on consistently,is it still the resistor? Also half the lights on the buttons off

[@NoNonsenseKnowHow]

it sounds like you could have a faulty blower control had. But no way to really tell without looking at it.