How to Change Chevy Trailblazer Heater A/C Blower Motor Fan Speed Resistor When Not Working 

Thanks this exactly what I needed to fix my wife's trailblazer

Thank you for this video. I replaced my resistor assembly today and it went pretty easy due to your instructions.

Worked like a charm and I got my mom’s a/c working again. Thank you!

Thank you for this video, just did mine after watching how easy you showed it is to do!! 🤙🏻

BRAVO! Remember the days of a cable to a damper that mixed the air ...with the heat or the cold??? I DO. Simple Simple Simple!

"Thanks for taking the time to do this video! I appreciate that you had the perfect amount of detail. Saved me a ton of money." that's a quote but it's the way I feel.

Thanks for taking the time to do this video! I appreciate that you had the perfect amount of detail. Saved me a ton of money.

Thank you. Very helpful. Blower worked 1-4 but not on 5, then went out completely. From what you showed it looked like the same problem. Very easy as long as you have proper tools. The hardest thing was the old style clip I ended just ripping apart. LoL. Thanks again.

Great video man going to use your vid to change mine this weekend it's funny that cord was all melted because I had just turned my air conditioning on and I started smelling like melting wires and that all of a sudden the blower wouldn't work anymore so this video made perfect sense to what I was smelling in the car before it completely broke I'll let you know how it works out

I didn't know about that resitor, I was just going to change the motor, thank you I will check that resistor.

Good job. I was able to get in and get out. Only issues I had was the plastic connectors. Also the the “RESISTOR BOLTS” was 5.5 mm for me. I was lucky enough to have it in my set. Thanks !!!

Great video, thanks for sharing. Laffin out loud here about the "crap" in and out of the glovebox. Cheers Man. M.

Thanks for the video. Just replaced mine here in Hawaii. Works great now.

Thanks for the video, It was real easy to do... took me probably 20 minutes and the new one I got off Amazon for $24 works perfect.. and thank goodness I didn't need the wire harness that came with it because my existing one was perfect, but I think it's awesome that my new one came with the wire harness.. (even though I didn't need it) so I didn't have to do what you said which would be maybe going to a junkyard and all that crap!! 😃

Hey just wanted to say thanks for posting this video I got an 06 that this video helped me out a lot man I appreciate it Good work

This was great! I have the fan working, now if I can trace down where the refrigerant is leaking from, I'll be in great shape.

Thanks much for this video. Worked fine for my 2008 Trailblazer just now. It was still working on high but now working fine on all speeds again.

Lol...thanks for this video..I thought that you were in my trailblazer..I my dash is the same color and I have the same JVC radio and my heater went out like that to..Now I’m about to fix mines..Thanks again 👍🏽

Thank you so much for posting this video! It helped me replace my resistor in my 2007 Trailblazer. I had lost 1 speed (4) 2 years ago and another (5) in the fall. I then lost the remaining three last week. I now have all 5 speeds! Thank you again! Todd

Thanks for the video. Helped me out 100%.

"6mm had a long night out" "You probably have crap, I have crap, everybody has crap" Love car videos with little jokes like these. Thanks for the help!

This definitely will help me.. you make it look easy. Seems simple enough

Thank you bro it was definitely the connector piece on the blower motor yellow one

Awesome video, just replaced mine. Very helpful and right to the point. Thank you for the help, made my day.

Best video on doing this job, thank you, I haven't replaced mine yet but I will use your video!

Thank you, so much ! You saved us a ton of money ! Very well made video -

Just this January I was warming up my 2006 Envoy in my driveway and my truck caught fire because of that resister. I even had it replaced twice. GM should recall these things.

Good job man! Helped me out.

Outstanding super easy fix thank for the tutorial

Yes, video was awesome thank you, now I'm going to go fix my blower

Great video, replaced the one my 06 trailblazer, again thanks 🍻😎

You're the man! Thank you!

nice job thanks my number 4 selection just went out grr

Thank you. Very helpful.

Great video! Thanks!

Thanks man!! It worked like a charm 👍

Gonna try this tomorrow ty

Nice video! Thank you

Is there a fuse on the AC control module? Mine works perfect sometimes, and sometimes it won’t work at all and just blows out hot air.

Thanks for the video I just saved my self $500

Wow very good vedio thank YOU

Very helpful thanks

Thanks good video

Hey could you feel the cold air ? In the vents ..cause I can just not blowing ...so blower or resistor

I changed my resistor and it fixed my problem with the speed settings but the plug was burnt so I ordered a plug and spliced in the new plug and now my vent controls are messed up.i double and triple check the wiring is correct.any thoughts?

Doing this job tmrw...thanks!

Great video!

Very good video

Do you know what would cause the blower motor to run all the time? Even when the trailblazer is off and key is out. Any help would be appreciated. Thanks

So if you change the resistor and doesn't fix it.. also the blower fuse fuse is blown and keeps blowing would it be the blower fan?

It helped. Thanks!

Thanks helped alot. 1 question WHAT IS THAT PLUG FOR THAT IS NOT CONNECTED WITH THE YELLOW ONE

I just put a heater blower motor in my 2007 Chevy trailblazer but it still won't turn on could it be that blower resistor please let me know thank you

Imma try it today during my lunch brake. I had my 5 speed working only and now it just gave out.

How did you get this black and red cable out with the orange clip? It is not working with me

Can you do me the favor of sending me the link where you bought the screen

Hi, great video! My parents traileblazer has stopped.working on thw 5th speed. I think this is the culpret just in beginning stages of malfunction, is that wire hsrness that goes to tbe blower motor from the resistor ziptied to the blower motor.itself? That was the only thing in your video that i have a question about, thanks! I gave you a like btw!!

I have the same issue. But it only works in max speed. And i have another issue. Like when you control the a/c. Like where you gonna blow it. Up down rear or back only. Is not working in that control. Thing.

Now I know what my pop and wire burning and ac going out noise was good shit

Yes this helps sooo Awesome! Does this resistor work on AUTOMATIC Heat/AC?

Mine doesn't work at all. Is there a fuse also that makes it not work

Thanks for the video and tips.. On my 2005 TB, my fan works on 1-3, but nothing on 4+... How do I know if its that resister gadget you show or the switch on the dash??? At 1st I was a 100% sure it was the switch, but after seeing your vid, im not sure... Thanks again for the vid and any additional advice.

Thanks!

All of my blower speeds went out completely then I replaced the resistor (mine was all melted as well) but it didn’t fix it any ideas??? Please get back to me ASAP thanks 😊

Thanks man.

Hey on my panel, speed 3 and 4 work, resistor? Excellent video

I thought that power bypassed the blower motor resistor and went straight to the blower motor itself on the 5 speed, so I’m surprised that replacing that resistor solved the issue.

Thanks

check cabin filters as well

I got a 06 envoy I have no ac or heat was working before spring hit and then it stopped randomly. Would it be the resistor?

big help but it is a 7/32nd socket thank you.

So my question is.... since GM don't protect the wiring or use the best quality in the first place to prevent this from happening, is there anything that can be done to protect the new thingy you put in from heat, ect to prevent this from happening again?

Any idea on why mine stopped working while I was driving. The rear works tho just not the front

Easy job but the wire on my resistor wasn't long enough so I made it work.

Hey i replaced this part and it now will blow on all levels but the ac is not cold ? Any idea

Mine melted in the g connection in my Silverado now I can’t get it to work any help

Yep, helped. 👍

Word of advice. Replace the blower motor and the resistor at the same time.

I have full power f/ blower on ac on setting 5 but when I slide to heat I get low blowing power. Please advise

Mines just blow cool out tha bottom vents how do I get it to blow out of both

Any tricks to getting that 2nd clip out?

Thanks man but yet I still have a problem with getting my A/C Heater working Out new climate control module ,the resistor and the blower. It came on for about six seconds and went dead. I can not get it to work.

By the way, I never found a 6mm that fit those screws either. I end up using pliers.

Can this video be use in my GMC ENVOY ?

Thats why you buy the new plug and solder the connections

Those screws for the resistor are 5.5mm

The problem with my trailblazer is that it does not change the air on the front panel, only at the feet and the windshield. What do you think the problem is. Thank you

The size of sockets are not 6mm and 7mm. You need a 7/32 and 9/32 SAE socket.

I managed to remove it without messing with the glove box.

My tb today stop the blower and there is nothing happening with the speed

💪💪💪💪💪👌👍

Good video, but you shouldn't need to take glove box out to get the lower panel off. But either way clean the crap out of you glove box.

so sad how this trailblazer is mistreated.

Klink bat

No need Don't need to take glovebox off

Sorry but the way theu drive here that woukd be kaos. I gorsee cash many accidents cuz there waychin the phone n hands arent on the wheel

It’s actually a 5.5mm socket

Crappy

Thanks a lot for upload this video the mecanic charges me 250 dolars for put this part

My chevy trail blazer stay turned on when i remove the keys i wento with a mechanic he charge me 250 dollars today im feeling so stupid so thanks next time iwill change by myself