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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation, And Air Conditioning >> Repair Instructions >> Heater Inlet Hose Replacement >> Removal Procedure

Removal Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac-N-Fill) .
    2. Fig 1: Identifying Heater Hose To Heater Core Fittings
    GM362171Courtesy of GENERAL MOTORS CORP.
  2. Using the J 43181  disconnect the inlet heater hose from the heater core.
    1. Install the J 43181  to the inlet heater core pipe.
    2. Close the tool around the inlet 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.
    3. Fig 2: Heater Hose & Mounting Clip
    GM814572Courtesy of GENERAL MOTORS CORP.
  3. Remove the heater inlet hose (1) from the mounting clip (2).
    4. Fig 3: Surge Tank Hose & Engine (Outlet)
    GM814578Courtesy of GENERAL MOTORS CORP.
  4. Reposition the heater inlet hose clamp from the engine.
  5. Remove the heater inlet hose (1) from the engine.
  6. Remove the heater inlet hose (1) from the vehicle.
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