How can i get my heat to work in my 2000 Chevrolet Blazer 4x4?

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RyanM

Member
My heat worked fine up untill a couple weeks ago. Now when i turn the heat on, all that is comming out is cold air. I tried running my truck for a couple of minutes with the radiator cap off to make sure i didnt have any air in my radiator/hoses. After topping off my fluids i tried my heat again and still cold air. I just replaced the thermostat tonight thinking that might have been the problem, but that didnt work either. Any suggestions?
 
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bunhole

New member
your heater control might not be opening to let the heat out. thermostat has nothing from stopping any blowing out your heater because if u eventually drive your truck 30 minutes the coolant is gonna get damn hot enough to blow some heat. Im sure it is the heater flaps door not working.
 
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