Yukon 4WD V8-6.5L DSL Turbo VIN S (1997)
Heater Hose: Service and Repair
Heater Inlet Hose
Heater Hose Routing
Quick Connect Heater Inlet Connector
Remove or Disconnect
1. Engine coolant.
2. Inlet hose from generator bracket.
3. Inlet hose mounting nuts.
4. Inlet hose clamp at heater core.
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Loosen the clamp enough to slide the clamp away from the fitting on the inlet hose.
5. Inlet hose from heater core.
6. Push inlet hose into connector and insert J 38723 or equivalent into connector to release locking tabs.
7. Pull retainer and hose from heater inlet connector.
Inspect
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O-ring sealing surface on hose/pipe.
Adjust
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If replacing heater inlet connector, remove retainer from hose and discard, as new connector is equipped with retainer.
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If replacing hose, remove retainer from hose and reinsert in connector.
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If reusing hose and connector, retainer can remain in place on hose.