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Why does the heater on my Chevrolet 2500 hd duramax not blow hot air?
Wiki User
∙ 8y ago
The engine needs to be hot in order for you to get got air. On a cold morning, even if you let your truck run for a while, will not get hot enough to blow hot air usually until you drive it for a little bit. When it gets at or near operating temperature there is no reason that it shouldn't blow hot air.
Okey Veum
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