Air only blows out defrost or top vents: mode actuator Blend door 99-2007 GM Silverado, Tahoe, Yukon

Blend door actuator (verify year, make, model at site) amzn.to/3sH6qIT
Blend door actuator amzn.to/3CdoiOG
Only Blows Hot or cold air • Air only comes out HOT...
I am an amazon affiliate, so when you purchase through the links I provide it supports the channel with a small referral commission. The price is the same for you.

[@gabo2nd]

5.5mm = 7/32”

[@ChiDraconis]

*Correct* May require quarter inch drive squiggle to get on some of them ▬ do not get impatient it is rigged to fail

[@petedandrea8463]

Dafuq is a millillameter?

[@jasonb4738]

@@petedandrea8463 not a stanandard 😂

[@thebrothers5218]

Saved my a**, thank you!

[@danielc6792]

😂

[@khpjackson1]

Short and to the point. It couldn't be better. Thank you.

[@Mime619]

You guys are info sharing pioneers of KZbin. Thanks man. The wife and kids were struggling to get out anywhere in the heat of the summer here in Houston. Took that actuator out and switch that puppy over to the front vents.

[@stephaniemcconnell3099]

Thanks so much for the video! It worked exactly like you said it would. Within 3 minutes, I had it fixed. Thanks so much for posting a practical, accurate, and helpful video!!

[@m23098]

I just unplugged the fuse for a few seconds and plugged it back in and my AC blows out fine now. Thanks for the video. I wouldn’t have figured it out without this video

[@MeliTX]

Which fuse please?

[@susanaflores1758]

thank you Danny, i found my self alone and i'm living in 90 degrees heat, so I have to change the AC Actuator, thanks to this video .

[@mulkster39]

Thank you for the video! Our 1999 GMC yukon had the actuator right out in front with no blend door. It was easy peasy and the wife now has front vents again. You have a new subscriber! We have to keep these old vehicles running!

[@ftavarez86]

Thank you! Just did this on the company truck, manually moved the lever so I get ac coming out the vents, it's been stuck on defrost since last summer! Now just waiting on the new actuator to come in and we'll be all set!

[@ryanfelton7385]

Dude - THANK YOU!!! I took ONE look at this area and saw the damn thing was unplugged.... plugged it in and air started blowing through the vents!

[@larryclay6372]

Place 5.5 socket on top screw, use short 6mm Allen wrench to loosen screw, use fingers to turn socket until screw is out.

[@ls1_dreamz]

But how about putting it back in??? Taking it out is the easy part...

[@riverdog6921]

Larry Clay, your comment needs to be pinned to the top of the comments!!

[@RodknockRhett]

@@ls1_dreamz don't put it back in.

[@davids1033]

Yes this worked for me.

[@kennymondesir188]

Thank you

[@garagegames2555]

I live in Phoenix, yesterday was 115° F. Thanks a ton

[@Jgarzilla210]

just disconnected it and I am blowing cold air once again out my front vents on my face!! It is hotter than hell out here in Houston TX. This was extremely helpful. Thank you!!🙏🏼

[@jackburton2680]

Good luck of you ever need working defrost though. Installing a new one is incredibly frustrating and in my experience in couldn't even get a new one to work

[@matthewdilger6755]

Excellent video. Short and to the point. Shows where the part is in the vehicle and tells which socket is needed for the job.

[@jboog7848]

Thank you so much! From a hot Texan that barely had ac creeping out the vents. Took it off for now.

[@mr.williams7740]

Thank you! I followed your instructions and everything worked out great. Thanks!

[@Happy-cp8in]

I ordered a 2000 Silverado without air. Because of your video I tried a stubby screwdriver in the actuator hole instead of taking it off. It was a hard clockwise turn but I got the door to move and get a defrost and floor air blend. Putting the dial in the right position made it turn easier. That's good enough for me! Thank you!!!

[@brad9092]

Man, this is the most useful video I've had all day! That's exactly what I needed. Now if I can figure out how to get that thing separated and put on the new actuator, then reinstall it, then somehow managed to put those two screws back in correctly, man, that will be the day, a blasted miracle will have occurred for sure. Thanks man.

[@jdmteggy626]

Thanks for making this quick and easy with good instructions and the link.

[@kootstermx]

Short and sweet. Thanks for getting straight to the point man

[@styxthebeatmaker8613]

BRO! You a life saver! I’ve bought new compressors, blower motors, cabin filters and nothing was coming out. THANK YOU!

[@clkirk70]

My 2001 Chevy Silverado a/c is doing this now, thanks for the remedy bro!!!! I'm going to be replacing the door actuator tomorrow morning...

[@bryanholdren9043]

Thank you Danny! 3 years later this video is helping so many people. My heater went out last week when it was cold. This week it is HOT. I drive a 2005 Chevy Silverado and man this was NOT easy to get out lol! IDK how you had room to fit your hand up there let alone your camera but I flew blind and went by feel off your video. Sweat dripping down me I somehow got both screws out and the actuator. The shroud stayed on and I'll figure out how to put the replacement back later. Gonna try your other video for my hot//cold issue later too! thank you again for posting!

[@TomBean-qf6zv]

Same here with my 1999 Silverado, can't even see the thing let alone work with it with two hands.

[@Hey_zues420]

Thanks man my company truck messed up and this was a quick fix cause you know how slow it is to get the boss to fix something as long as the truck still runs

[@trclark7689]

Thank you for this video... I bought a 2003 Z71 Sierra a couple days ago and the AC was dead, only blowing warm out of the defrost vents... removed actuator, it's blowing full blast and cold now, which is something I desperately needed as I live in Texas!

[@vickywitablicky8353]

did you fully replace it or just remove it ???

[@trclark7689]

I just removed it.

[@THOTPATROLVIA]

This video was spot on thanks man ! My ac mode was out for a good week till I found this video! Helped my 2002 Silverado in 20mins.

[@carsandhealthtoddrosenzwei2661]

How did you successfully install the actuator shroud (cam) so it worked? I'm having so much trouble and the air is still coming out of defroster, not the dash vents.

[@carsandhealthtoddrosenzwei2661]

Specifically concerned with if the two plastic studs that move each of the doors, need to be in a certain position when installing the new actuator

[@THOTPATROLVIA]

@@carsandhealthtoddrosenzwei2661 yea it works and still does that little part in the video and spot is exactly what I did

[@THOTPATROLVIA]

@@carsandhealthtoddrosenzwei2661 try lining the plastic up correctly when you put it back it’s supposed to go up and down with the circle groove

[@j.t.masters1934]

Thank you for the information and another great video.

[@carlocarrejo1833]

Best video ever just got my vents blowing again thanks!!!🙏🏻

[@nunyabidness7489]

THANK YOU!!! if more guys would just get to the point instead of starting with a bunch of jiberish they'd get more views

[@nadirahrashada4538]

This the video I needed to see. My Tahoe is doing this very thing right now.

[@1nateaber]

Short and sweet, thanks!

[@UccelloLibero86]

I changed both blend door actuators, tried all the resets out there, changed the air filter etc. Theeeennnnn i found your video. It fixed the issue. My 2007 chevy avalanche ltz was stuck on defrost.. took this part out and tried switching in over manually and it blew out of the vents like a champ. Thanks for the video

[@LILGIBBYPRR-ESR]

Is it hard to put in

[@chriscase6341]

Thanks alot for taking the time to save us alot of time

[@BigZu423]

Great Effing Vid Brody. Straight to the point quick and easy. Much Love from Chattanooga Tn.

[@austind9723]

Thanks for the vid, just had to replace mine

[@johnnyquest1974]

Thank you for the video and it fixed my problem.

[@MrIsntOnAGen]

I disconnected my battery and unplugged the actuator for a few minutes and plugged it back up and it worked again. Glad I tried that before pulling the actuator off

[@toneytone7497]

Is it still working

[@MrIsntOnAGen]

@@toneytone7497 yes

[@robertolsen9742]

Found GM Blend/Mode Air Door Actuator Gear Rebuild Kit (Fits Chevy, GMC and more 1990-2013). Many times it is just the gear inside the actuator that has split and preventing the travel of the selector once the the gear cracks. The hard part is getting this one removed and reinstalled. Kit runs $12.00. The gear is the same for the lower Heat/AC near floor.

[@christopherpivarnik4959]

I'm fixing mine now. Can't get it back in. Mines an 01 Silverado 1500. Taking it out wasn't bad

[@jerseyjim9092]

Not sure why, but this was one of the most aggravating jobs I've ever worked on. Had a bear getting that flap button to go into the slot. And then it kept popping out before I could get the 2 screws in. I found it best to install the top screw first and had to use a mirror to get the holes lined up. Oh yeah, I had to use tape to keep the screws on the sockets. Anyhow, after about 4hrs, I got it on and it seems to be working OK. Wished I had fixed it along time ago because I think all the heat coming from the defrost was responsible for cracking my windshield.

[@dmalott0908]

Thanks for the help! Going to order the part now.

[@Bridar9]

Isn't this one called the "Mode Door Actuator"? (Def/Dash/Floor)

[@monstersquashracing]

Great video danny. Thanks for sharing

[@livinginh]

Awesome, thank you

[@dawudalithesowsagepodcaste8688]

Thanks bros. Great video!

[@steveriley263]

Great video. Helped me out a lot. Which of the slots on the shroud should the white plastic lever go thru?

[@carsandhealthtoddrosenzwei2661]

Lmao. Yes... Taking it out is a piece of cake... but it would be great if you explain how to install it and what positions the flaps need to be in to make it not "jam up". An installation video is needed too.

[@dustinauch7178]

Any luck finding a replacement video? Thanks!

[@carsandhealthtoddrosenzwei2661]

@dustinauch7178 no. 😞 and the blend door still isn't aligned right. So the airflow isn't as powerful as it could be, and it's louder now

[@pedrotenorio1391]

It’s not too bad putting it back in. I literally just did one today on one of these trucks. It was stuck on defrost mode so all I did was plug the plug back in without mounting the actuator back. Compare the old one to the position the new one is at, after that just simply go to the mode that corresponds to the position the old one was in. So basically I pressed the mode back to defrost and it moved the new one to the exact position the old one was at. I just slid it on and mounted it and worked perfectly fine. Hope that helps you some

[@lovetofly32]

I just was working on a friend's pickup that was stuck on defrost so I took off both these controller motors and opened them both up and put 12 volts to them and they both worked! They looked new inside! But that black half circle track with the grooves where those pegs slide seemed gummy so I cleaned it and regreased it and it works fine now! But I do know that where the big shaft goes into these motors it goes in to a white plastic gear and most of the time that gear is split/cracked and can no longer turn the shaft. Theyre very low geared so that little motor can get alot of torque on that final gear if something gets wedged in those flappers that they control and breaks that final gear. So don't let things fall down your defrost because it falls right down on them.

[@Blando7887]

wonderful video, thanks

[@ShmoeLettuce]

Swapped my mode actuator out following this tutorial and the problems fixed! Thanks man, you saved me some money🤘🏽

[@ls1_dreamz]

I can't get the top bolt put in 😭 Edit: I got it figured out a day or 2 later. It just kinda sucks lol

[@Dtxmundo]

@@ls1_dreamzhow you get the top out 💀💀help plzzz

[@ls1_dreamz]

@@Dtxmundo A 7/32 socket and a compact 1/4 socket wrench. When I put it back on i tightened it with my fingers using a short extension attached to that 7/32 socket. You may even try using that to loosen it. It takes some getting used to so have patience!

[@Js23187]

I just manually reached all the way to the back and moved it manually with the part still installed. I just pushed it all the way to the left and when i tested it it blew from the fromt vents again tysm man

[@debacofzomb9889]

Unplug the motor

[@janelldemello9052]

That was going to be my question. Can you just move the lever without replacing the part?

[@Js23187]

@@janelldemello9052 yup

[@AP_90]

You saved my day. Just did it. Worked to perfection. Now i have ac where I need it Thank you .. 💪

[@blueridermg]

Perfect thank you

[@saulmiranda1376]

Thank you great video 🔥😎

[@karenvanderwall6684]

Nice video. Easy to listen to

[@jtru8077]

Perfect video thank you!!!!!

[@davidjohndoe804]

Very helpful 👌

[@christopherpivarnik4959]

How did you get it back in? I can't figure it out

[@JillVanderVelde]

So I have an 1:47 easier fix if you're broke but determined like me. Pull the vent off like he said wedge your head around the break pedal. If you look above and behind the actuator motor you'll see the white switch that you can turn manually by again wedging your hands back there (I have large hands so most men can do it too)and push it the opposite direction. Heck yeah!!! AC blowin on me again without sticking my head to the windshield. Very needed here in AZ summer scorching heat. Ha ha ha, yes I'm proud of myself. But huge thanks to this video, it made it seem doable and it was.

[@Blgtn43]

Thank you.

[@ichthyander.]

Thank you very much

[@ryandobbins4699]

It worked! Thanks

[@jaysmiiles210]

This is a great video

[@dg31062009]

Thanks so much lots of help

[@RoRo-bg1qe]

Staright to the point. Subbed

[@killak5mv]

Thanks for the Video

[@josemontes6224]

Thank you god bless you

[@Jjason601]

Thanks a lot

[@theoriginalBlue72]

Thanks , gave mine a tap and started working fine 😂 seriously right after I watched ur video …

[@user-fo4ou5uk4y]

That is the simplest video I have ever watched how to get this s*** to work thank you

[@txgreasemonkey]

7/32 SAE socket is a working equivalent to the 5.5mm size.

[@sandrahughes5016]

Very helpful

[@jerseyjim9092]

Been putting this off for a long time, mainly because I wasn't sure the cause. Some sources indicated there were multiple actuators that could cause ac and heat to only come out the defroster. Maybe so, but I'm going to start by replacing this relstively inexpensive one and see what happens.

[@greenEyezAZ]

Thank u very much

[@PaintingDenver]

Great instruction Danny. Owe you a hamburger & Coke. Saved me prob. $200.00 for my 2000 Silverado 1500

[@xxmikexx2715]

6mm also work just fine 03 gmc yukon

[@roadstar499]

thanks for this great right to the problem video... so there is only one of these on a 2001 silverado that controls what vents blow air? the only other one is on passenger side for hot or cold air??? thanks

[@roadstar499]

BTW A 7/32 socket is perfect fit,,,easy peeezzzy...since in over 50 years i never ever owned a 5.5 mm size or needed one...

[@gabo2nd]

I just banged mine with the end of my ratchet and it got to movin again. Sometimes just needs a little motivation!

[@debacofzomb9889]

I just move the position and unplug it. That's what I did on my Silverado and what I'm about to do on my Yukon. They should really recall that part of it's gonna break on every single vehicle it's installed in...

[@ttyR265]

I started looking into this in my 2003 Chevy 2500HD diesel, 40,000 miles. I could see the actuator motor trying to move so I helped it gently. I cycled it back and forth ten times and it seems fine. I leave it set on vent all spring/summer and defrost all fall/winter...wondering if in my case, it needs to be cycled periodically. Also wondering if using a small amount of plastics-compatible grease on the sliding parts would help take some strain off the motor.

[@a57chevy43]

I was trying to find a video to send to a friend to help him change this part out of town and skipped over it several times in my search. This is called a “mode actuator”. Blend refers to the blending of hot and cold which is another actuator or actuators all together. Otherwise a good video.

[@dannyjohnsonsgarage]

Thanks. I added it to the title

[@addisonbush8289]

Thanks for the short and sweet. Great job. Now if you could do one for the blend actuator in the human female. Lol.

[@fernandoflores8618]

THANKS BROTHER. GRACIAS HERMANO. 👍😀

[@garycantrell4521]

Yea he makes it simple been 8 months still haven't gotten it in tryed to get the guide off broke it havent fooled with it blows on face 😆

[@sirlloyn9115]

Thanks this helped. But idk know if It was actually motor in my case. Cause when I went to disconnect the blend. I found evident of someone working on it before. Electrical tape holding it up and the motor had a loose screw probably because their hand was to big. Issue solved tho.

[@FurryWrecker911]

"It's not a very common size" _Harbor freight has entered the chat_ I've had two of their Pittsburgh Automotive toolkits for 8 years and always wondered what the point of the 5.5mm socket was. Now I know. lol

[@Lookaround753]

Great video. Thanks for stating the socket size. How do i know if the new actuator lines up with the correct vent?

[@KawiAcrid]

Excellent video, one question though! I have very hot air coming out of vents no mater if i have the temperature turned to hot or cold. BUT when i switch from vent to defrost, then turn from hot to cold the ac/cold air works great! Weird right? I already pulled off the blender actuator on passenger side & manually turned the knob either way. Still nothing but hot air coming from vents. Working on my ol mans 01 chevy silverado 1500 z71 any feedback is appreciated

[@MrKingsley16]

I can see the gear rotating forward and backward when I change modes from defrost only to floor only, but there is very little floor and always defrost. Does that mean part replacement or maybe something else? Thank you in advance.

[@michaelroberts1346]

Hi Danny, I have a 2007 GMC sierra 1500 SLT I changed the heat actuator in the heat continues to blow out even if it’s off and now I have no defrost. It will not switch to defrost or go out though feet blower. High control unit says defrost, but nothing comes out stays on heat.

[@isaaclovato1712]

My truck is a 08 Silverado 2500 it blows through the floor and defrost vents but when we turn the selector it turns but don't grab the white teath

[@fucktheleftFJB]

I have a 2012 sierra and it's stuck on heat on the floor. The other vents don't blow. I initially tried changing the blend door actuator but it still does the same thing. Will the mode door actuator be the one I need to change? Help!

[@Iowaboy2164]

Every video I’ve seen they have made it look so easy to reinstall the bracket and blen door actuator on the driver side and I can’t get it to line up for anything

[@jackburton2680]

Part of the problem is none of these isntruction vids seem to bother addressing this apparently crucial step. Alignment seems to matter yet no one talks a out it

[@JeffJames-wo6bd]

Your instructions were perfect for getting this blend door actuator removed. However, I am having a lot of difficulty reinstalling it on my 2000 Yukon. Can you direct me to a video or provide any pointers?

[@dustinauch7178]

Did you ever find a good video for replacement. I took wrong one out also :(

[@Drewfvalencia]

Do you have to have it on a certain vent mode mode

[@eastonwilliams8775]

Hey man I was needed a little more info on the part on the hump I guess the blend thing

[@cadillac8927]

I'm using the same small socket and Ratchet that you have and I can't get my ratchet and the socket up on that top Bolt

[@ChiDraconis]

_unplugged the actuator for a few minutes and plugged it back up_ in the comments is a micro-thing semi-conductor layer which results from oxidation ◙ These are chrome plate contacts due to economic reasons and you cannot detect the layer watthour science mind like mine → All you need is some antioxidant as proven by my fixing the passenger side hot-cold diverter servo 2 days ago and now you can hear the air-door thump over in time with Thumper-bumper Ka Whammy ! It works

[@marcusd25]

So just unplug it for a bit and plug it back in?

[@Truckerraf]

So I work at FedEx and wear shorts all year the heat works but only blows through defroster and direct face. After I defrost I would normally audibly hear the vents knowing the leg heater would kick in. The knob works for every thing but that. Would I need this or a new control ?

[@ermannodangelo4087]

What about the other white lever with the gears. How do you line up the 2 levers to the cam on motor

[@jefflewis7569]

Thanks for the video this was excellent! Question for you. There are some gear teeth on my shroud that match up to some white gear teeth on the box but the shroud travel doesnt cover all of the teeth but only like 1/4 of them. Do you know what should be adjusted so the there is complete travel along those teeth? It seems to me if the whole tooth profile is not being used then the damper doors are not opening fully?

[@ChiDraconis]

There is supposed to be a limit-stop which prevents going off the end of the gear sprockets ~ you set the thing to the middle of travel and do not force it; Seems to be a calibrate but have not found reliable ○ Factory is charging 100-x what it costs them to make it so they are playing us • You do not need complete travel over all available teeth as I am a perfectionist and have had to realize this is not how this works → The servo is supposed to have a "sensor" which does the feedback loop telling it when to stop · The general design is that of a bridge such that neutral "in the middle" is the zero value with ± limit of travel being held for ransom by Control Clowns® ◘ Your best approach is to hire a dirt contractor whom will crush it flat for a fee

[@jackburton2680]

I've given up on installing a new one. I simply can't get it to work. Not sure if the gears aren't aligned properly or what, I can't think of any other reason it wouldn't work. I resorted to leaving the actuator removed entirely a d just adjusting it by hand when I need defrost vs cold air out of front vents. And I never bother with foot vents now. Impossible task

[@danielitros28]

@@jackburton2680 glad I’m not the only one🤣

[@jackburton2680]

@@danielitros28 yeah not hard to inst it but whether it works is another story. I saw no other way to position it than how i had it on install yet i still didnt have fully operational. My initial prob was it would only blow thru defrost vents, well i did fix that problem but now i can only blow thru the front vents. Insp everything so i know the issue is with the blend door itself, not something else on the truck.

[@arcorob]

Danny, this is very helpful and I even ordered the part from Amazon. One thing confuses me. My controls (from left to right sitting in drivers seat) Fan speed, temp, then the selector for defrost, vent , floor, etc. In other words on the RIGHT side yet, you show changing the module on the left (closest to the steering column). Is that right ? I would have thought it was opposite...please let me know so I dont change what doesnt need changing, It is stuck on defrost but fan speed is okay so dont want to FIX the wrong one ...Thanks

[@dannyjohnsonsgarage]

It may depend on the year of the vehicle and if it has dual climate control or not. Also, the heat blend door is on that passenger side on mine kzbin.info/www/bejne/laHJaIFopdKepsU