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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 819 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater Hose Replacement - Inlet (Avalanche/Xlt LR4, LM7, LQ4) >> Removal Procedure

Removal Procedure

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  1. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  2. Remove the air intake tube.
  3. Remove the heater and surge tank hose from the mounting clip.
  4. Using the J 43181  disconnect the heater hose from the heater core inlet.
    1. Install the J 43181  to the heater core pipe.
    2. Close the tool around the heater core pipe.
    3. Firmly pull the tool into the quick connect end of the heater hose.
    4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.
    Fig 1: Disconnecting Heater Hose From Heater Core Inlet Using J 43181
    G01454294Courtesy of GENERAL MOTORS CORP.
  5. Remove the inlet heater hose from the engine.
    Fig 2: Removing Inlet Heater Hose From Engine
    G01454295Courtesy of GENERAL MOTORS CORP.
  6. Remove the inlet heater hose.
    Fig 3: Removing Inlet Heater Hose
    G01454296Courtesy of GENERAL MOTORS CORP.
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