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Discussion Starter · #1 ·
I have an issue and need dome advice I bought a 2002 Chevy S10 Blazer 2wd 2dr with the 4.3L in it. Here is my issue when blower motor is off heat will come through vents by itself. As soon as I turn the heat on with the blower motor heat turns cold. Is this because of the blend door not opening or is it something else?
 
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