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

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.

RepairPal Verified
Average mileage: 141,666 (97,000–170,000)
5 model years affected: 1999, 2000, 2005, 2006, more2011
6 people reported this problem
2 people shared problem details
HAD THE SAME "FITTING" PIECE ISSUE.
2005 GMC Yukon Denali170,000
Heater core hose quick connect leaking.
Related Items:

Related Content