This repair manual covers both the short-wheelbase Caravan and long-wheelbase Grand Caravan models.

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Heater blows hot air and then cold air?

Heater blows hot air then starts blowing cold air. This goes back and forth while driving. I replaced the blower motor yesterday because it quit blowing. This is on a 2007 Dodge Grand Caravan.

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I would check your coolant level. If you have enough coolant then it might be a problem with the thermostat.

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