Jeep Grand Cherokee heater core replacement needed due to no heat, fogging windows, and coolant leak on Jeep Grand Cherokee

Submitted by nvkrick · Jun 23, 2025
Published by RepairPal

Problem overview

Some Jeep Grand Cherokee owners report experiencing issues such as no heat inside the vehicle, fogging windows due to coolant leaking into the cabin, and visible coolant leaks, which may indicate a problem with the heater core that requires replacement. These symptoms can suggest a malfunctioning heater core, typically located over the transmission tunnel, which necessitates removing panels and cutting tubes for replacement. Owners have noted that improper installation can lead to further issues, such as haziness in the vehicle and additional coolant leaks. The cost for a heater core replacement can exceed $1,012, including labor and parts. However, some individuals have successfully replaced the heater core in under an hour with the right tools. It is advisable for owners experiencing these problems to have their heater core inspected and replaced promptly to ensure proper heating system function and prevent further damage.

12 people reported this problem
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Jeep Grand Cherokee vehicles with this problem

Average mileage: 126,408 miles
(68,040 - 210,000)

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