gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Heater Inlet Hose|Page 1840 > < Heater Hose W/Out Auxiliary Heater|Page 1837
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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.

Heater Inlet Hose|Page 1840 > < Heater Hose W/Out Auxiliary Heater|Page 1837