Also check all ends of said hose and any connections if this doesn't fix your problem..... my issue was at the check valve [dry rot hose]. I just cut back an inch reconnected and boom it works!!..... thank you for the original video!
I seen your video and would like to help you; the Vacume line connector was installed on the wrong part of the Heater Control-valve; it normally installs on the bottom of the small canister there is the 'port'. I havent seen a Heater Control-valve which has a Vacume port on the or near the retractable-lever area.
I think mine was the multicolored lines above the floorboard on the passenger side. One line was kinked. I also performed a reset, turning off everything, removing fuse to ac heat. Turned truck on then off, reinstalled fuse. not sure which one did it.
just installed a brand new Newtech pro engine in my 2003 express 3500 from Autozone and still looking for MY vacuum leak. Day 2 is about to be over and this hunt goes on.
No it does not go there! That is a bolt. The vacuum line connects to the plug in the (underneath) center of vacuum motor which is that round looking thing under and to the right of where you connected the line. The reason it worked for you is because you plugged the vacuum leak so that the AC damper motors will now work but I guarantee your heater won't this winter haha.
1:32 That is not the correct location for that vacuum line. You connected it to the valve spindle of the heater control valve. The correct location for that vacuum line is on the bottom of that round piece with the white label on it. That vacuum line opens and shuts the valve controlling the flow of coolant to the heater core for heat. All you did was plug the vacuum line disabling the heater control valve meaning coolant will constantly flow through the core. That's OK though. I removed my heater control valve. It's an unnecessary part that's prone to leaking. I then capped that vacuum line.
That's the same thing I'm thinking. I like to give ppl the benefit of the doubt but I just bought that heater bypass and my vacuum hose was at the bottom and not at the side as shown here.
Mine blows cold (2007 GMC Savana 3500 6.0) but just can't get the air to blow out of the vents. My rear AC is also blowing cold. Did you have cold AC before the fix?
Did you ever find a fix to this? I have an 08 that does the same. Blows out the defrost and floor but wont switch. The temp control works. I looked over vaccum lines and they appear to be in decent shape, and my line is hooked up to the vac resivoir under the battery.
@@trandonbanner2663 yes I did thankfully. There’s a vaccum connector in the passengers footwell under the dash. When I did some dash work I must have jarred it loose, the connector was not fully seated. I pushed the connector back together and put a zip tie around it and it worked perfectly!!
I had the same problem on my 1983 Chevy G20 van. When the vacuum source is lost the vent position defaults to the defrost vents. There are two spherical vacuum reservoirs, a big one and small one. One of the vacuum lines to the small reservoir came loose and needed to be reconnected. Problem solved.
I have the same problem in my 2016 express 3500.
Thanks for the tip ✌😊
Here's hoping that will solve the problem 🙏
Also check all ends of said hose and any connections if this doesn't fix your problem..... my issue was at the check valve [dry rot hose]. I just cut back an inch reconnected and boom it works!!..... thank you for the original video!
Thanks a million for this video. It helped me resolve an everlasting issue. So thank you so much 🙏
Reconnected the tube to the ball under
the battery works like a charm Thanks
John Kinnett Same thing here.
This was the fix to my issue..thanks!
Had the same issue on my 2013 Chevy Express 6.0L. Reconnected the tube to the black plastic ball under the battery. Thanks!
I seen your video and would like to help you; the Vacume line connector was installed on the wrong part of the Heater Control-valve; it normally installs on the bottom of the small canister there is the 'port'. I havent seen a Heater Control-valve which has a Vacume port on the or near the retractable-lever area.
Thanks so much! Saved me a who know's what bill with the mechanic.
I think mine was the multicolored lines above the floorboard on the passenger side. One line was kinked. I also performed a reset, turning off everything, removing fuse to ac heat. Turned truck on then off, reinstalled fuse. not sure which one did it.
just installed a brand new Newtech pro engine in my 2003 express 3500 from Autozone and still looking for MY vacuum leak. Day 2 is about to be over and this hunt goes on.
THANKS!
Incredibile ,You are the best!
Another place to check is the bundle of small multi-colored vacuum lines under the dash in the passenger side footwell.
Good tip 👍
No it does not go there! That is a bolt. The vacuum line connects to the plug in the (underneath) center of vacuum motor which is that round looking thing under and to the right of where you connected the line.
The reason it worked for you is because you plugged the vacuum leak so that the AC damper motors will now work but I guarantee your heater won't this winter haha.
Thanks Friend I have same issue with my 05 express. 👍
I have the same issue as you and Corey Hunter, but I cant seem to even find the hose to reconnect it...?
1:39 lol "good luck"
1:32 That is not the correct location for that vacuum line. You connected it to the valve spindle of the heater control valve. The correct location for that vacuum line is on the bottom of that round piece with the white label on it. That vacuum line opens and shuts the valve controlling the flow of coolant to the heater core for heat. All you did was plug the vacuum line disabling the heater control valve meaning coolant will constantly flow through the core. That's OK though. I removed my heater control valve. It's an unnecessary part that's prone to leaking. I then capped that vacuum line.
That's the same thing I'm thinking. I like to give ppl the benefit of the doubt but I just bought that heater bypass and my vacuum hose was at the bottom and not at the side as shown here.
Any idea what that part is called that you connected the hose to?
Heater control valve
this wasn't my issue. it was the other guys video:
ruclips.net/video/B9u9AiPjHf4/видео.html
Mine blows cold (2007 GMC Savana 3500 6.0) but just can't get the air to blow out of the vents. My rear AC is also blowing cold. Did you have cold AC before the fix?
Corey Huetter
Did you ever find a fix to this? I have an 08 that does the same. Blows out the defrost and floor but wont switch. The temp control works. I looked over vaccum lines and they appear to be in decent shape, and my line is hooked up to the vac resivoir under the battery.
@@derekchupurdia4885 did you find a fix? I have the same exact issue
@@trandonbanner2663 yes I did thankfully. There’s a vaccum connector in the passengers footwell under the dash. When I did some dash work I must have jarred it loose, the connector was not fully seated. I pushed the connector back together and put a zip tie around it and it worked perfectly!!
@@trandonbanner2663 it should be the big connector with the multi colored lines running to it.
My 06 comes and goes as it pleases which leads me to believe it hasn't just come off but maybe.
I had the same problem on my 1983 Chevy G20 van. When the vacuum source is lost the vent position defaults to the defrost vents. There are two spherical vacuum reservoirs, a big one and small one. One of the vacuum lines to the small reservoir came loose and needed to be reconnected. Problem solved.
Cold air was coming out of the defrost vents. The a.c. was working fine.