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No Heat on 93 Chevy full size truck Replaced t-stat flushed water through heater core T-stat gauge is 205 Now what?
Wiki User
∙ 16y ago
I guess since you were able to flush water through the core there is no blockage or valve to give you trouble.
Are the heater hoses hot when the engine is at operating temperature?
that is how you know that you have circulation through it.
I am going to assume yes since nothing else you said would lead me to believe otherwise. Now you need to check the blend door in the heater. If it is stuck on vent or AC then you will get no heat. The actuator may be bad or the door may be just stuck from humidity.
Wiki User
∙ 16y ago
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I have a 1999 blazer. The heater core clogs up about once a year from the Dexcool. Try having it (heater core) flushed and use Prestone (Extended life) instead of Texaco.
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How do you determine why a 1999 Chevy Blazer just blows out cold?
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