Question about 1999 Jeep Grand Cherokee

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Defroster not defrosting the windshield

I have a 1999 Jeep Grand Cherokee Laredo where on this colder mornings no matter if I run the defroster on cold or warm, the windshield won't defrost? There is plenty of air coming out the front middle defrost vent but no change in the foggy glass? Thanks in advance for any thoughts or advice.

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  • dmaske Nov 10, 2008

    I have the same problem. I believe it is a leak in the heater core which is very expensive to fix. Have you had anny luck?

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Check your heater core

Posted on Oct 03, 2008

  • leo kowalski Aug 07, 2012

    see if you can smell anti/freezewhen the heat is on, if you can most likely the heater core is leaking and needs to be replaced

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