Overheating and/or Coolant Loss Due to Leaking Quick-Connect Fitting on Chevrolet Suburban 1500

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: 162,000 (144,000–180,000)
8 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1998, 1999
12 people reported this problem
2 people shared problem details
Heater hose quick connect coupling rotted out and broke off flush with the engine. Had to buy an $80 drill and thread repair tool kit from Napa. Pay no attention to the videos on YouTube Just go to Napa and by the repair kit and a new coupling. Kit also comes with a splined easy out that you may be able to pound down and remove the broken piece with. I had no luck with that. Napa part # is 77-4029
replaced it with a solid metal piece...not a quick connect junk
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