The quick-connect fittings for the heater hoses tend to leak engine coolant. This problem commonly occurs because the metal housing has become brittle, which can break and cause leaks.
Average mileage: 150,193 (45,971–199,000)
15 people reported this problem
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leaking coolant at quick-connect fitting at the Heater hose.
leaking from quick connection on heater core inside under the glove box. Replacement heater core was $35.00 at local parts store. Was quoted $800.00 to install at dealership. Did repair myself in 5 hours for free. its a bad design and could be done in a half hour if they would put an access door in engine bay.
Filled my coolant up week ago and now it's almost empty.
this appears to be my identical issue.
leaky quick connects may leak fluid