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Lynn 3/21/2011
1997 Chevrolet S10 LS 4 Cyl 2.2L - Engine
my heater works fine but only blows through defrosters, how do i get i to go through vents & below?
1 Answer
  • HouseCallAuto
    HouseCallAuto 3/21/2011
    Probably has a vacuum hose cracked or broken off somewhere under the hood and likely right near the vacuum storage canister. If the vacuum line that goes to the heater AC controls leaks vacuum, the default position for air to blow is through the defrosters.
    Lynn 3/21/2011
    Thank you very much!!!! i had replaced some hoses but need to go in search of more it seems

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