11-29-2019, 09:43 AM | #1 |
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Join Date: Jun 2012
Location: Big Timber,MT
Posts: 7
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72 AC air flow issues
Hi Everyone, I have a 72 GMC K2500 with factory air. I'm getting air out of ac vents but can't get it to come out of the defroster/floor vents. Not sure if its a cable or vacumn issue. Thanks for any ideas and help.
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11-29-2019, 10:26 AM | #2 |
Senior Member
Join Date: Aug 2014
Location: Arizona
Posts: 1,481
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Re: 72 AC air flow issues
Most likely your flapper inside the diverter box is broken.
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Az |
11-29-2019, 10:55 AM | #3 |
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Join Date: Jun 2012
Location: Big Timber,MT
Posts: 7
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Re: 72 AC air flow issues
Thank You Sir, have to dig in when the weather improves. Cold and snow for the next 2 days. LOL
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11-29-2019, 01:44 PM | #4 |
Registered User
Join Date: Mar 2005
Location: Jurupa Valley, Ca
Posts: 1,210
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Re: 72 AC air flow issues
The flapper door is controlled by a cable, you will want to check that also. I believe you can verify if it is moving the lever before you disassemble the system.
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Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC |
11-30-2019, 07:32 AM | #5 |
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Join Date: Jun 2012
Location: Big Timber,MT
Posts: 7
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Re: 72 AC air flow issues
Thank You Sir! Appreciate the help/
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