This helped out so much I'm doing a drive across Canada and I'm 4000km away from home and about 200km from a mechanic who can speak English and it's currently 7pm so everything is closed, (I'm also car camping so this honestly saved my life/ sanity) thank you for this ❤

Hey boss just wanted you to know. That this is the first video on this subject and problem that offered an every man look at the situation .you saved me money and time and made a subscriber out of me. I wish you the best of luck with your channel and look forward to the next video thank you

Just bought the wife an '06 Trailblazer. The blower works on 1-4, but not on 5. I'll get up under there and see if a zip tie will fix it! Thanks so much for posting this! I've been wrenching on cars for 41 years now (since I was 16) and cheap fixes are still OK by me! Also, it would appear that your wife's Trailblazer is missing the plastic kick panel under the glove box, unless you removed it and didn't show that part.

Thank you for taking the time to share your experience. Your video was very helpful.

My plug wouldn’t stay tight to the resistor, so I cut up a plastic zip tie and jammed 4 pieces in it, now it all works 100% I am amazed. Thank you very much.

You may never see this, but THANK YOU. I live in Fort Worth, Texas….OMG the summers are HOT. I can’t live with no A/C. I love Zip ties…hahaha. I was tickled. My husband died from cancer a few years ago and so I’m Ms Fixit on his Chevy Silverado. It’s getting old but I don’t care. I love that truck because he loved that truck. And yes I do do the mechanical work whenever I can. My past jobs working at a defense contractors in their mechanical & electrical assembly positions gave me a good start for auto mechanic work. And people like you give me the ability to get it done without needing a mechanic I can no longer afford. Thank you again. I’m pretty sure I have a similar problem because if I tap on it, it blows and I replaced the blower motor last year. So if it’s not a loose pin connector, then I’m just gonna go ahead and buy that connector 10:33 assembly and replace it which is right up my alley too, because I did a lot of wiring harnesses at the aforementioned job. 👍👍 Fingers crossed!

Just bought an 04 Envoy a couple days ago and the heat sometimes works and sometimes not. You just helped me to trouble shoot it and narrow it down. Thank you

This just happened with my 2007 trailblazer. A/C stopped blowing. I messed with the harness and sure enough, the fan came back on. Zip tied it, good to go. However, I see and smell burnt plastic on one of the wires, so I'll replace the harness just to be on the safe side. Thank you so much for making this video!

Thanks for this help, I look forward to more of your posts...GMC ENVOY XUV owner since 04

My 04 has the same exact issue this helped me a lot. Thank you saved a lot of time and stress

Thank you, I had to bang on my Resistor and heat , ac came on. Thanks for this wonderful video.

Saved me money.. exactly the problem I had, it's to cold not to have heat. Thank you

Simply ❤ how you emptied the glovebox. "...there we go..." 😂😂😂

My hearter was working last night this morning it was out, im going to try everything you just did thanks.

awesome Rob thanks I will have check that out on my 02 Silverado 4x4 pick up

Thank you so much. This happened to my blazer and you saved me a ton of money and time.

You are the Man! Thanks so much for the advice, this fixed it for my wife and now she is Happy 😁

Thank you so much for this video! I'm having the same issue and I didn't know how to troubleshoot this issue.

Thank you so much!! You should be proud you have helped so many people!! I got this 2004 GMC Envoy "cash car" And I am having to fix issues myself. so your video helped me save some $ , I was about buy new everything!! i live in TX-- we gotta have AC in our cars. Any way,,, Thanks & be Blessed

I haven't got a chance to try it yet but thank you for that information when I get back home to Texas by Future sister-in-law has 06 and she has the same problem sometimes it works on 5 and sometimes it doesn't.I will definitely check it out when I get home. Thanks

Nice find my brother.... HAPPY NEW YEAR!....I just subscribed... great channel great find on that pigtail harness...

Great FFFING video. I am ready to light mine on fire. Well I was until I saw you. UPDATE: I jiggled the harness to the module. It works. Same as you. I have no idea if it is the harness or the module. All I know is that I have a blowing fan now and I have heat. I miss the old days of a cable and a damper a nothing ever screwed up. It was simple and sweet. As it is now all those damn vacuum dampers on my ENVOY SLT are not opening up all the way. That is another can of worms I will have to deal with. Thank you Thank you. You saved me a shit load of time and money!

Great video. Thank you sir. Also, thought you might want to know (just in case someone didn’t mention it already), someone has definitely been in that area before - the blower motor is missing the plastic cover that goes over the back of the motor (i assume the cover keeps the cables away from the motor so they don’t melt). My AC is not working, but I didn’t check the harness or change the resistor, so I will be trying this tomorrow (or tonight if I get itchy). Thank you for the video sir.

I have a 04 GMC Envoy XL. The blower ( in the front ) works SOMETIMES 1-5 but past couple days it DONT WANT TO WORK. Now you wake up get in the car in the morning and it’s not working. Drive down the road and it just comes on or hit a speed bump and it comes on . It’s random. But your video cleared it up for me. I’ll bet it’s a loose harness. NOW I need to figure out WHY my independent rear system has AC but NO heat for the kids in the rear 2nd 3rd row seating. 🙄🙄 but your video has been a tremendous help . Thanks 😊

Awesome video. Mine has a loose wire as well...yeah!!!

All of mine went out now. Ugh, it's in the high 90s here in Houston. I gotta fix this. I wiggled it for weeks and it worked, but not at the plug just at the wires. Speed five has never worked, speed four only sometimes did. I really don't need speed five as the A/C blows ridiculously cold. I hope if fixes cheap and easy like yours!

I'm going to look into this on my 06 tbss when it warms up a bit. i can live without heat for my commute but i won't work on this thing outside when its -35 below.

"Let me put the camera down and pull this out" Which is the one thing I needed. I appreciate you guys trying to help; but skipping information doesn't seem to accomplish this. This is the seventh video I've looked at trying to figure out how to release the damn connector from the blower and not a single person shows what the magic trick is. It's either edited out or the camera shakes so it can't be seen.

Bingo! Loose harness great video and great help. Saved me a bunch of $$$

This video definitely helped me. My truck did the same thing. Crappy design

Just an FYI I tried various solutions to fix this problem this is what worked for me. No air , some air , blowing here and not where it should be to keep it short. With the vehicle off (a 2002 Chevy trailblazer LT) I pulled all the hvac fuses under the hood and under passenger seat in rear behind driver. I then started the vehicle for about 2 minutes then I turned it off reinstalled fuses started it and no issues since.

Good show, gave me some direction

Thank you, Very good video.

Saved me hundreds! Thanks!

thanks for the hint on the loose harness.. got it working again 0 dollars!

Awesome! I'm going to try this in my 04 Rainier before actually buying anything lol

Thanks for this video.

What if my blower motor stays on you think it could be that or the resister?

Hi Axle...how do you unplug the connector from the blower? I tried to pull the orange tab out and pull the connector out, it wouldn't come out. Just not sure I am doing the right thing. Thank you for the video.

Ty, exactly what I needed to see.

Excellent infomation

What is the name of the wiring harness I have a 2003 trailblazer and mines is kinda burned

This video is awesome! I bought a 2008 Trailblazer. Everytime I turn it off, the next time I get into started I would have no heat blowing. Replaced blower motor and resistor. But it is something in the fuses if I pull the fuse out under the hood but it back in, it blows Heat. I have been saying I think it's something under the dash there you have just about confirm that for me thank you

Thanks this really helped me

Thank you sooo much for this video. Mine had the same problem you sir saved my ass!

Thanks buddy same car same colour even as well lol and yup same exact problem and fix💪 😁 Much appreciated

Axle! I need help. Having the same problem with my 05 envoy and Cant figure out where my mode actuator is located

Thanks helped me out

My heater was working but there was a bad knocking in the dash so I replaced both actuators on passenger side ididnt unplug the power to the heat blower and got a ground and blew fuse. Tha caused the blower motor to run key off key on it blew the resistor so always unplug the battery. Now it works great thank you guys.jerryc

I'm actually having this problem right now gonna try it hopefully I dnt need to buy one

Sweet! Thanks homie!

Mine does that exact issue when it stops working I open the glove and jiggle the black cable that goes down to the resistor and it works every time but I'm going to hook a cable tie to it to see if it works well. Ps. I have changed the resistor twice before I figured out it was the harness.

Those plugs plug into the xm radio controller don't hurt nothing if you don't have it

How did you get the harness out mine is stuck in the resistor I’m pulling and it don’t wanna come out

OMG I am sooo proud of myself and sooooo very thankful to you for posting this video and sharing your knowledge and expertise on this stuff! After watching this about 4 times now I finally managed to go back out and try one more time to get my blower to work again. It is that harness thing that’s real sketchy. I have had the blower stop and start repeatedly for 6 months or so but 2 weeks ago it stopped and I have been able to mash bang or jerk it to get it back in again. I’m 63 1/2 years old and a little bit overweight so trying to get down under my glovebox is a huge challenge plus I have pretty intense claustrophobia and panic and anxiety has hit every time I’ve tried to get down under there and start to roll over to my back. Anyway, I went out and used a mirror up under there to see What was happening and it’s definitely that harness thing cuz I yanked it a couple of times and it started to kick on. Yanked it a few more times and it came on and I placed a long thick stick down there to press it I to place until I can use a zip tie tomorrow to hold it on. What a crappy design eh? But lots of things on this 2003 Buick Rendezvous have been designed crappy. My parents bought it new off the showroom floor but then the dealer went out of business and a couple of recalls were missed and I’ve never been able to get Buick or GMC to acknowledge them so I’ve footed the repair bills myself or just deal with it. But sure glad such an easy to understand and follow video like this was available to help me get to this point to get it back on!! I am woman hear me roar! Heheh No, I could t have roared without your help so thanks!!

My 05 trailblazer had the same problem just put a cable tie in myself

hey alex i did the evap hack and still has a small leak any suggestions on how to stop it

do you happen to know how to fix the rear blower in the center console on a standard trailblazer not the ext large model?

We are having trouble with my 2005 GMC Envoy XL. The blower wouldn't shut off first so we replaced the Blower Motor Resistor now it works on high but on low after a few minutes it shuts off? PLEASE HELP!! We are frustrated!

My issue is: fan motor changes to every speed. Changes to every air location(Floor/vent/Def) I just do not seem to get much air out of F/V/D. I hear all actuators moving and air does come out. I do not have cabin filter(Checked). Any solutions? My thought was maybe blower is powered backwards. Or is their something that is restricting air. Thank You for your time. 2002 Trailblazer Lt.

Maybe I missed it at the beginning,Does this apply to both manual and auto controls? Thanks.

Should you have power to the fan switch on the dash or does the power to that switch come from the resistor??

Hello , I have a 2004 Chevy Trailblazer.When I turn me engine off the back blower continues to blow air until my battery goes dead.Can my fuse be bad, if so what fuse would it be? Thanks for your time.

I have a 05 Chevy ext and my ac works fine for the front but in the 2nd and 3rd row they only blow to the feet

I've got a 2007 trailblazer, my heat wouldn't really work through my vents, but it would work on dash, now it's not working at all. Please, help if you can.

hey what number fuses ?

Would the resister cause both front and back blower motors not to work

Same problem loose wiring harness

Hey Rob I've got a 02 Tblazer I bought last year. When i bought it the heat worked but after time when I'd try to turn in on the engine would die. Now that it's cold again I'm finding it doesn't power on at all but the engine stays idling. Any ideas? I'm still going to follow your video here on my next day off n see if I can find the issue. Thanks for reading Rob!

So... mine is burning the harnest i replaced the harnes and it melted it again any suggestions?

How did you pull the plug out?

Mine actually melted the ground wire on the plug. I had no blower at all....

Do you know by any chance where’s the blower motor ground

Hi, does that resistor also regulate the temperature ? Thanks.

My ac light comes on but nothing comes out. I’ve replaced the resistor before so I don’t think it’s that. Weird thing is that my rear windows, cruise control all stopped working at the same time. Any suggestions

Mine basically will work only when you move the wire, then it will turn off not long after, once I unplugged the wire it was melted but I’m scared if I only replace the part that melted that it will just melt again, so should I replace the wire and the part you plug the wire into? I’m not too good at this stuff but I did pretty good finding out what is wrong with it. If anyone could help message me please!

Mines something like that but air is coming out everywhere else but the top vents what could it be

Did this with my 05 trailblazer replaced Harness and the resistor a didn't have speed 5 this did nothing

My blower motor has a yellow wire and a blue, which one is hot???

I checked for power on the wire going into the blower motor, but got nothing. I checked the harness but only two out of the seven entry points lit up. What do you think could be the problem? I will say when my AC was going out, the compressor would kick and almost turn off my AC. Then the AC started to go out slowly and had to use lower settings starting at 4 down to 1 until it didn't turn on anymore. Five never worked. Any advice would be appreciated. Thanks.

cool. thanks. will check out my plug first.

I changed my resistor and my passenger door will not work, electronically. It turning signal does. Will not lock or window won't roll down

All her shit is going to fall out of it. Let me move her stuff. There we go! Lmfao😂😂😂

I didnt understand. You had voltage going to the blower at the beginning. so the blower should have worked. Had the same issue. First time was motor. Second time was resistor. the old one was almost melted.

Thank you so much! Was just about to pay my mechanic $75 when it was just the loose connector

The wires on the resistor wasn’t making any good contact

Thank You Very Much for the Video, I love how you cleaned your wife's crap out of the glove box

I replaced the resistor and the problem remains. What is my next step?

You did not show how to pull that plug out of the blower motor!!!!!!!!!!!!!! You put the camera down... No!!!!!!!!! I have spent thirty minutes trying to figure out how to unplug it. Come on!!!!!!!!

All newer cars are a poor design. The idiot designers took all the fun out of building cars and working on cars.