Question about 1999 Chevrolet S-10 Pickup

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1997 Chevy S10 Pick up air distribution system not working properly

Just recently I noticed that my truck's air distribution system is not working properly. The dial in the center of the console, which allows me to choose where the cooled air should enter the driver's cabin, works alright. It seems that the mechanical part directing the air towards the feet, or towards the top part of the console, or towards both somehow got stuck in the position, which allows the air to be dispursed only towards my feet. I live in an area with 95 plus degrees Fahrenheit during the day and driving with freezing feet but close to 90 degree Fahrenheit in the top part of the driver's cabin is getting to me. I was wondering what I have to do to get to the part which I think is responsible for my dilemma.

Thank you for your advice in advance.



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It sounds like you have a check valve out. These are little plastic inline one way valves about the size of a nickel and maybe 1/2 in thick. They are part of the vehicles vacuum system and they prevent suction loss during system changes. They extremely cheap in the SELF HELP aisle of most auto parts stores. they have a little paper one way diaphragm in then that eventually goes out. Start on the top of your motor around the intake manifold, trace the small rubber hose until you find ine, pull it apart and try blowing in it, if it blows and sucks, than its gone out. It can only do one not the other. good luck

Posted on Aug 14, 2008


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Posted on Jan 02, 2017


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