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Could be low coolant, stuck thermostat, bad heater control head (if climate control)

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โˆ™ 2009-01-21 15:27:00
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Q: What causes a Pontiac Montana to blow cold air?
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No heat Pontiac Montana?

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It seems to be especially in hotter weather of 90's and above What causes an air conditioner to blow cold for a short time period then only blow hot air not going back to cold and How can I fix it?

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