Overheating and/or Coolant Loss Due to Leaking Quick-Connect Fitting on Chevrolet 2500 Pickup

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: 209,000 (180,000–271,000)
Heating & Air Conditioning affected: 5.7L V8
11 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000
18 people reported this problem
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Viewing 1 - 4 of 4 problem details
Eliminated couplers and threaded brass barbed connectors to engine block. Used truck bus high silicone heater hoses and left enough room to replace alternator with big frame 140 law enforcement alternator
1997 Chevrolet 2500 Pickup 180,000 mi,
same as above
just found problem and have not addressed it yet