Overheating and/or Coolant Loss Due to Leaking Quick-Connect Fitting on Chevrolet Tahoe

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.

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Average mileage: 150,193 (45,971–199,000)
6 model years affected: 1995, 1996, 1997, 1998, more1999, 2005
15 people reported this problem
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Viewing 1 - 5 of 5 problem details
1997 Chevrolet Tahoe 172,000 mi,
leaking coolant at quick-connect fitting at the Heater hose.
1996 Chevrolet Tahoe 176,382 mi,
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.
2005 Chevrolet Tahoe 115,000 mi,
Filled my coolant up week ago and now it's almost empty.
1999 Chevrolet Tahoe 45,971 mi,
this appears to be my identical issue.
leaky quick connects may leak fluid