Question about Chevrolet K2500

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No air coming through the vents

Ever since I bought the truck a few years ago I noticed there is hardly any air blowing out of the vents, in fact I can barly feel the air moving. I know the vacuum line to operate the doors is hooked up, and the blower motor is working fine. The cable operated door is moving correctly also. I plow snow in the winter and when I'm plowing the parking lot at work it will roast me out of the truck, but once I hit the road to move to the next job it gets cold again. The thermostat is working fine also. Any ideas why the air barely moves?

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  • Ron S Apr 22, 2009

    Thanks for the tip Jerry, I will try to get that vent checked out this week. One other idea I had considered was the vacuum control switch might be bad and or leaking. I thought about putting vacuum gauge in there somewhere to see if the vacuum is even there. Again thanks Jerry, Ron S.

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  • Chevrolet Master
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Sounds like the door that brings in fresh air is not closing enough so when you get to moving it is not letting the cab recirculate the inside air and bringing in some from the outside which comes from the bottom of the windshield on the outside. along with when you get to hitting the gas going down the road you might be loosing a little vacuum and that door going to your vents might close a little.. ? what you thinkin? just a few ideas might not be a fix though thanks Jerry

Posted on Apr 22, 2009

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This is a REAL SWAG
(stab in the dark... (a bit reasoned))...

Confession... I'm no GM expert... but
General Motors & FRIDGIDAIRE
are the "GREATS" in automotive A/C.

and

This is the BEST DOCUMENTED QUESTION I have
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I hope I am not doing a disservice by attempting an answer...

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You can comment me back...

I bought ALL THE TOOLS years ago... NOTWITHSTANDING my amateur standing... I only let the JAGUAR DEALER jam me for an $800 Schrader Valve since 1965 (Mustang(all the rest... I did myself)).

Happy to chat... comment me back.
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- Hope this inspires...

Carnac the Magnificent

http://www.rockauto.com/en/catalog/oldsmobile,2002,silhouette,3.4l+v6,1382295,heat+&+air+conditioning,a/c+receiver+drier+/+accumulator,6972

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