Overheating and/or Coolant Loss Due to Leaking Quick-Connect Fitting on GMC Yukon

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: 144,333 (55,000–283,000)
9 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1998, 1999, 2008
14 people reported this problem
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Viewing 1 - 4 of 4 problem details
1996 GMC Yukon 55,000 mi,
I have had the connector replaced by a GM mechanic twice in three years. I bought(4) connector none stopped the leak. I then went to the repair site and the info given states to replace the connector with a threaded hose connector from Advance Auto Parts. Will ask for this part at Advance Auto Parts.
1995 GMC Yukon 168,000 mi,
broke off poor design
1996 GMC Yukon 121,000 mi,
Heater hose connector leaked and eventually broke off.
1997 GMC Yukon 150,000 mi,
fitting broke off,