How to Fix 73 - 87 Chevy C10 Climate Vacuum Control Valve Leak for $1 | No More Hissing Behind Dash!

#c10 #squarebody #vacuumleak
More Videos On Amazon - www.amazon.com/shop/influence...
On this video I fixed the vacuum leak on the rear of the climate control. The leak was causing a hissing sound behind the dash and not letting all the vacuum actuators to open and close like they should. The vacuum actuators control the different positions of the vents. This is a common problem with these old trucks and the part we modded is a hard to find part that usually runs $125+ when available. .
*Disclaimer: This video description contains affiliate links. That means that I am awarded a small commission for purchases made through them, at no added cost for you.

[@wdkilgore]

No more hissing! Super excited!

[@user-sg6qk9mg6b]

Holy crap, thank you. I'm in the north east, it's almost mid October. The frost is alive and well. This is exactly the step by step video a person like me with little knowledge of fixing things like this needs. You have helped me so much and made it so I can literally get to work and have money for my family. I can not tha k you enough. Absolutely liking and subscribing. You rock!

[@ronpaloschi2248]

unbelievable,exactly the video i needed.found the metal star washer on the floor of my elky and also lost all vacuum control from thatswitch.never did find the plastic keeper.nut and bolt and some loctite!!!fantastic,thanks

[@brennenhawkes8025]

This video is a godsend. Thank you so much for the help! My 1987 G20 van’s AC vents are now working thanks to you.

[@gimmefuel7268]

Fantastic, thorough video my man! Good job! Salute from next door in Statesville North Carolina. 😁😎👍🏻👍🏻

[@Viking74256]

Great work bud !! Thanks

[@danielpeters408]

Awesome video thanks for sharing 👍

[@Guajardoiv]

Thanks for the info! Can you do a video of the a/c system in general? I am trying to piece together build a parts list to complete what I have and what I need to buy to restore the system.

[@robs_garage0278]

I started to have a vacuum leak in my 1980 elcamino this video helped me out thank you :)

[@Fentertainment]

Good Deal.

[@richardbrady2818]

I have to replace a heater core so think i'm gonna get into the control also, thanks

[@shaneallen5739]

Great info bud!!! Question, what size was the bolt that you used.? Don’t think you mentioned it. Thanks!!!

[@henrywages2409]

Great 👍

[@78squarebodyjimmy10]

Thanks for your video. My Vacuum system for my bend doors doesn't work. Where does the Vacuum come from possibly that hole is disconnected.

[@drewjohnson6583]

I havent noticed any hissing, but mine will not switch to any other positions..Hopefully something simple like this. Will be checking soon. Thank you for posting the video

[@drewjohnson6583]

Let me Be more specific. Fan speeds change. What dosnt change, is which vent its blowing from. Seems to be stuck on front dash vent and the floor vent.

[@francinemcnabb6915]

Mine you can hear the fan, it changes speeds, but no air is coming out of any vents, I was hoping this was the issue but nope, so back to hunting down the issue

[@tlbdad123]

Mine blows out in multiple places but mostly out the bottom, slightly out the defrost, no hissing sound though but I may need to do the same thing, blend doors seem to be moving well, AC blows pretty cold
Any advice is helpful

[@user-rs3vr1ig6j]

Do you remember the thread size on the screw and nut? I might of missed it in the video.

[@imheretolearn770]

Question, the vacuum hose that goes to the engine bay, a mouse chewed mine off and I dont know where it goes. Does it just hook to manifold vacuum?

[@JeffGoDawgs]

I need help with the blend doors on my 86 c10 hope you have a video coming for that 😂👊🏼

[@Fentertainment]

What’s wrong with yours

[@JeffGoDawgs]

@@Fentertainment blows out in multiple places

[@Fentertainment]

@@JeffGoDawgs this one was doing the same thing. One of the main reasons I did this video.

[@JeffGoDawgs]

@@Fentertainment how did you fix

[@eyexzick]

So I’m having issues with what seems to be no vacuum coming in from the manifold. Any ideas?

[@chiphazzard8173]

Would this cause my ac compressor not to get power? 87 square. Checked low pressure switch, checked r134 pressure I can't get any power to my compressor

[@josecavada3830]

👍

[@rayjohnson7886]

Hi have you ever tested or knows someone that knows how to test the master vacuum switch on a 1977 GMC Sierra Classic C15 pickup thank you.

[@troys_weight_loss]

I have like the same truck but the AC won’t go through the vents its goes through the bottom vents were feet are only

[@tylerbuilt_chevy_tough5163]

Same radio in my 84 k20 lol

[@drewjohnson6583]

So I did this..still no luck. Still dosnt swap to different vents. Its stuck on dash and floor vent. Everything els works. Just won't swap to just the front dash vent. So frustrating.

[@xreaper117x7]

I turned on my A/C the other day and it was working fine, but as soon as I switched it to bi level, the whole thing cut off and won't turn back on, and the control lever is stuck on bi level, it will switch to vent and heat with some hissing in the back, but will not budge past bi level, any tips or suggestions?

[@Fentertainment]

its probably this. The hissing you hear is actually vacuum leaking out. The vacuum is what controls all the doors in the system.

[@ScottBeane]

Any idea what the replacement part number is for the complete valve? I have looked at about 10 part numbers with no luck.

[@Fentertainment]

No Idea, Sold this truck this year. Think Im done with c10s.

[@karterrush7683]

Can you buy that valve anywhere?

[@Fentertainment]

I’m not sure to be honest. I think if you could find nos on eBay maybe.

[@DumbCarGuy]

you can just get a jamb nut, they are thinner.

[@Fentertainment]

Good Call

[@Walter-ou3ey]

? ??o?o??