Car Problem Reports

GMC Suburban 1500 Quick-Connect Fittings For Heater Hoses May Leak Engine Coolant

GMC Suburban 1500 Problem
17 Reports
Me Too

Model Years Affected: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999

Average Mileage: 177,972 mi (125,000 mi - 217,000 mi)


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.

  • , , 208,000 mi

    Engine leaking coolant, white steam in exhaust. replaced intake manifold gasket and bad coolant hose connector fitting.

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  • , , 151,253 mi

    Took it to mechanics shop, there were other issues with it, don't if I will keep it... :(

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  • , , 182,000 mi

    slight coolant leak for about 6 days, then on cold engine start- threaded end of heater hose adapter broke off-hope I can fix it for cheap (ain't nothing cheap any more, but I can still hope

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  • , , 200,000 mi

    I tried to replace it when it started leaking. Ended up breaking off in the manifold. Had a wicked time getting the rest out of the manifold.

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  •  Rookie

    happened to me ,then when I tried to remove it I broke the cast aluminum manifold,cost manifold 50.00 gasket set50.00 plus labor uuurrg

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