Question about 2003 Jeep Grand Cherokee

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Heater not working

My 03 jeep grand cherokee will only blow cold air. I am not sure where to start.

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  • Anonymous Mar 13, 2014

    2007 jeep grand cherokee heater blowing cold air

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Depending on what package the Jeep came with, you could have a broken or disconnected vacuum line to the heater doors.
If it's electronic, there could be a blend door accuator not working.
There could be a bad heater control valve or just a engine thermostat that's staying open all the time.

Posted on Oct 14, 2008

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