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How To Fix The Problem On Chevrolet Express Vans When HVAC Air Only Blows Out The Defrost Vents

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This video shows the viewer how to fix the problem on Chevrolet Express vans when air only blows out of the defrost vents. The problem occurs when the vacuum controlled HVAC doors lose vacuum and can't open or close. This is part of the HVAC Air Management System.

Опубликовано:

21 авг 2024

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Комментарии : 82

@dmitrynikolenko4412 4 месяца назад

Was gonna go to a mechanic to fix this. Then found your video, purchased that hose on Amazon and replaced. Took me 1-2 mins. Everything works now! Thank you so much!!!

@cams3091 Месяц назад

What hose did you end up getting?

@LoganFord91 Месяц назад

@cams3091 There are 2 sizes, 7/32 and 5/32. One size goes from canister under battery to a T fitting, the other goes from that T fitting to the top of the intake manifold. I'm the fleet mechanic for the company I work for. We have right around twenty Chevrolet Express vans and box trucks from 2006-2023. On at least 5 of these, the guy's told me it gets hot in the winter and cold in the summer, but it blows out of the defrost vents or blows out of every vent in the cab no matter what. An automotive shop the company used before I took over maintenance and repairs said that they all had bad blend door actuators, and 2 needed the climate control module(controller in the dash). Gave quotes from $450-$700. Go to a local parts store, get 5ft of each for $15-$20. Save yourself $500+ 😂

@user-qq7cw5bt4r 9 дней назад

Best repair video I have seen lately... Thank You

@scottmiller355 4 месяца назад

Had the exact symptoms and the video showed the exact solution, the vacuum hose was dry rot. My local automative had the vacuum hose in stock for my 2015 Express ... hose size is 5/32 from the vacuum tank to the junction and 7/32 from the junction the motor. I purchaed 2ft of both hoses needed for under $10. Thank you brotha so much for this video!

@tacticaltrout 4 месяца назад

Thank you so much! I had looked for hours for a solution thinking it was electrical before finally seeing this video. My 2016 Chevy Express 3500 can now blow through whatever vent I choose! I'd buy you a cup of coffee or a beer in a heartbeat!

@warrenjones744 2 месяца назад

This video just saved me who knows how much time looking for things that could be. Not knowing the system, I would have struggled. thank you sir.

@smallengineshop 2 месяца назад

Glad it helped!

@Jimmy_Cavallo 11 месяцев назад

💥 I just had transmission fluid lines replaced on the radiator of my 2001 Express 3500 that were right near that vacuum canister. Mine is under the battery. I picked up my van and realized that the air was only blowing at the floor and not on the dashboard or at the defroster. I pulled the battery and traced the hose from that round canister up about a foot to a T fitting and saw that the hose that goes from there across to the drivers side was cracked at the end. They must have bumped it when pulling out the trans lines. I snipped off 1/2” from the end, pushed it back on to the T fitting and VOILA…. Air blows from wherever it should now. Thank you. I owe you, bro 👊🏼🍺

@catchingzip 8 месяцев назад

I can’t begin to thank you so much for your perfect video of the problem that I had. You were absolutely correct with showing us that hose. This happened to me on Sunday, and I had the correct size hose from my fish tank. lol. I’ll pick up the correct rubber hose tomorrow. Again thank you so very much.👍

@Sign-of-the-Times 3 месяца назад

OMG! I have AC again! You rock! Thank you👍👍👍 That was exactly my problem. Mine was mounted under the battery. Ive had this issues for at least 2 years. All fixed!

@EricGuindon-c7c Месяц назад

Thank you my work truck has been driving me nuts the last few days I decided to look on you tube and thanks to your video was able to fix it in les then a minute

@eeezzztolv 2 месяца назад

Same thing, just started today. Figures when it's 88 degrees outside. But thank you so so very much!! My van is a 2014 loaded with options, all-wheel drive, rear cargo heater, electric and heated mirrors rear cam, etc etc only 23,000 MI. They don't make them anymore so I don't want to get rid of it. regardless of all that, again, thank you so much

@smallengineshop 2 месяца назад

Glad to help

@eeezzztolv 2 месяца назад

@@smallengineshop fixed pretty quick! Dogs and I are nice and cool now

@dricolee5297 Год назад

This was indeed the problem..!! Great video... REmove DOGHOUSE. U don't have to remove seats just shift DOGHOUSE from side to side for access. MY long VACCUM hose was broken on top if my engine.. go-to lowes or hone depot and get 1/4 inch clear tubing and run through firewall to T connector under battery rack.. check other vacuum hoses too.. Supa easy fix. Thanks for video.

@DavidTermini 2 месяца назад

Wow I just reached down felt around that round tank,felt the tank without a hose attached found the hose and reattached problem solved .I can not thank you enough for showing this.I put lots of woodworking vids on youtube too.Thanks again

@smallengineshop 2 месяца назад

Glad it helped

@3rdvoice32 4 месяца назад

This is the most useful video i have found on youtube.. thank you .

@markcaldwell1245 Год назад

This was indeed my problem thanks for the video. I replaced the entire hose line through the tee and up to the engine just under the right side shroud inside the van. The entire rubber line was rotting due to it dangling next to the exhaust manifold. I secured the new line with zip ties to get it away from the exhaust.

@sb6162 Месяц назад

Did you have to mess with freon or vacuum pump, etc?

@markcaldwell1245 Месяц назад

@@sb6162 no it is just a what I consider a plain hose for controlling the air vent doors operation because they are pneumatic. Super easy fix.

@sb6162 Месяц назад

@@markcaldwell1245 awesome. Did you need to work on it from the inside of the van or were you able to do it everything underneath the hood?

@markcaldwell1245 Месяц назад

@@sb6162 the front of the hose is just under the battery connected to a ball diaphragm. The back you will need to go inside on the right/ passenger side and pull the engine cover back a few inches and you will see the hose connected to the engine. I do recommend replacing with the same type of hose. Mine collapsed but it was cheap water tubing and I expected it to happen. Also get some zip-ties to keep it up and away from the exhaust areas.

@sb6162 Месяц назад

@@markcaldwell1245 you are a gentleman and a scholar. Thanks for replying to my comment brother. Happy Independence Day

@joker71677 2 месяца назад

This was spot on exactly what was wrong. Thank you so much. Four dollar fix.

@Arielacuna Год назад

Thank you for this video , mechanic said $300 , I fixed it my self for $6 😂😭

@williamalbright8878 Год назад

Been a while but I’m glad you are doing a video thank you

@smallengineshop Год назад

Thanks

@xxbrryder86xx 3 месяца назад

To put it simple, it works. Thanks for the video

@danderson808 4 месяца назад

Thanks!!!! I was about to start with a new blower motor. Easy fix!!

@willclancy4329 Месяц назад

Thanks a mill solved my problem. Exact issue on my chevy express 1500..

@smallengineshop Месяц назад

Glad it helped

@mariocasillas4672 2 месяца назад

Thank you I was gonna take it to the mechanic save me a couple hundred bucks

@alexxx1842 Год назад

Thanks man I solved it by watching your video

@enfamy_OG Год назад

Perfect! Thanks for this. 2013 express van and same problem herr

@MasonDevTHEGOAT 9 месяцев назад

Thanks for the vid. Have a 2011 Savana Van The fan only works on the highest setting (4) and at that setting, hardly any air comes out of the front vents. The air does seem to be flowing out of the defroster vents. Appreciate your thoughts on this scenario.

@user-vo5id9nr8m 8 месяцев назад

You the MAN!!

@mattwells-gk9jm 2 месяца назад

Nailed it!

@smallengineshop 2 месяца назад

Thanks!

@user-uz7ir9sc1t День назад

That old hose that connected to the vacuum tank, where did the other end of that hose connect to?

@zamsing7500 Год назад

Thank you. You saved me.

@tylerseabook9423 10 месяцев назад

Thank you. That was my issue

@rodneyfarmer8907 4 месяца назад

Thank You!

@mundoamericano596 Год назад

Thanks for the video brother

@bobbyvidana6351 12 дней назад

I recently replaced all the vacuum lines and it started working, but then after about an hour or 2, everything turned off. I can't tell if the relay is bad or the fuse resistor blew on the blower motor? Any ideas? It seemed to work just fine and then randomly shut off? Fuse isnt blown, Going to replace the resistor & relay to see if thats our problem

@sg0940 4 месяца назад

Good video

@wileyearly7051 3 месяца назад

Thanks!!

@smallengineshop 2 месяца назад

Your Welcome!

@fernandorodriguez6530 19 дней назад

What does the junction connect to ?? Myns was disconnected from the other end I don’t know where it goes ?

@juliencueff9127 9 месяцев назад

OMG ! Just that ! hahah thanks a lot !

@CyberFleamarket Год назад

Hose junction your holding at time mark 1:36.. once you connect a hose to that nipple, where do you run the other end?

@zamsing7500 Год назад

You connect with vacuum tank Under the battery. That’s mine it is. 2016 chevy

@user-ue8ls4xi8z Месяц назад

Where's the hose junction located

@Splexity 18 дней назад

Mine does this also, but it’s on and off. Ac works when it wants to. Not sure what that could be

@Amirah6071 Год назад

The front works perfectly fine but the rear doesn’t. How do I fix that

@Joe-nx7nj 5 месяцев назад

Do you know what size hose that is?

@JasonLee-lv7tm 4 месяца назад

Small one

@leslupton7299 26 дней назад

I did that same thing plus ran the other bigger hose which was split got air out dash,blower setting work fan speed works,but still doesn't blow out strong enough to keep cabin of 2013 GMC Savana,go from regular to max air it gets louder but to me don't blow hard enough doesn't change the power

@geometro9769 22 дня назад

Same issue. Lost I've gone through we can email or snapchat an brainstorm together if interested. Gone through almost everything

@RustyTromboner 3 месяца назад

Dude, thank you so much for this video. I just fixed my AC for $5.00

@nitrisz2 2 месяца назад

These are the types of videos that should be monetized. Not stupid dance videos.

@mikeh5039 6 месяцев назад

Thx

@iarriaga45 2 месяца назад

i have an issue. 09 chevy express. i did the cleaning on the board and charged the flow sensor. but the compressor dont do the clicks. any idea ?

@paulfox521 Год назад

I got that 2013 express van too

@natakilaw397 Год назад

What will make the AC freeze up even if the freon is good. It will blow icicles until it freezes up

@boostallday2 2 месяца назад

Is the vacuum tank in the same location for 2019 model?

@smallengineshop 2 месяца назад

Probably, but Im not sure.

@e.w.7778 17 дней назад

I replaced all my vacuum hoses and it was working afterwards but now nothing is working on any setting. Any idea what it could be?

@bobbyvidana6351 12 дней назад

I'm dealing with the same thing right now. I had a problem, and when I fixed the vacuum hoses, it started working, and then it randomly shut off everything. I'm about to replace the resistor and the.Relays, and I'll let you know if that works

@e.w.7778 10 дней назад

@@bobbyvidana6351 I just replaced the check valve and it seems to be working good as of now.

@luisvo8388 Год назад

Where can I buy the hose

@thomasayala1956 6 месяцев назад

would this be an issue on a 2016 or newer

@MoeLarrycurly1 Год назад

👍👍

@smallengineshop Год назад

Thanks!

@user-gp8ow8ug7g Год назад

My air blows out the front vents but the a/c will start then it will stop and go again will this be my problem I have a 2010 Chevy express 1500

@markcaldwell1245 Год назад

Sounds like a compressor problem.

@7pneuma941 4 месяца назад

i had 13 codes come up just because of this problem. Lets see how many will disappear once i fix it. WIll be back

@Jorgecuellar24 11 дней назад

This video fix my problem too thank you so much for the guy who made this video god bless you

@paulyhoffmann Год назад

Mmm. I'm gonna check with mine which also has the same problem: won't blow out of the front, just the vent and the sides. I thought it was something more mechanical then that. Will check a bit later.