Defrost blowing in vents too?

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Defrost blowing in vents too?

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> S-10 & Blazer >> Defrost blowing in vents too?

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Defrost blowing in vents too? - 1/25/2008 4:27:42 PM

truesmack

Posts: 10
Joined: 12/3/2007
Status: offline

I have a 2002 blazer and when you go to defrost or feet and defrost on the heater, it also blows through the main vents, something doesn't seem right about this, I had to close all the dash vents so it would blow up at the windshield to dethaw it. Any ideas on what could be wrong, I have a 2001 blazer too and this one doesn't do it.