GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2007 🢒 H2 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Heater Outlet Hose Replacement

Tools Required

J 43181 Quick Connect Connector Removal Tool

Removal Procedure
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .

    2. Object Number: 362171 Size: SH
  2. Using the J 43181 disconnect the inlet heater hose from the heater core.
    3. 2.1. Install the J 43181 to the heater core inlet pipe.
    2.2. Close the tool around the heater core inlet pipe.
    2.3. Firmly pull the tool into the quick connect end of the heater inlet hose.
    2.4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.
  3. Using the J 43181 disconnect the surge tank outlet hose from the heater core outlet.
    4. 3.1. Install the J 43181 to the heater core outlet pipe.
    3.2. Close the tool around the heater core outlet pipe.
    3.3. Firmly pull the tool into the quick connect end of the heater outlet hose.
    3.4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.

    Object Number: 814572 Size: SH
  4. Remove the surge tank outlet hose (3) from the mounting clip (2).

    5. Object Number: 814578 Size: SH
  5. Reposition the surge tank outlet hose clamp (3) from the engine (2).
  6. Remove the surge tank outlet hose (6) from the engine (2).

    7. Object Number: 801110 Size: SH
  7. Reposition the surge tank outlet hose clamp (5) from the surge tank (2).
  8. Remove the surge tank outlet hose (3) from the surge tank (2).
  9. Remove the surge tank outlet hose (3) from the vehicle.

Installation Procedure

    Object Number: 801110 Size: SH
  1. Install the surge tank outlet hose (3) to the vehicle.
  2. Install the surge tank outlet hose (3) to the surge tank (2).
  3. Install the surge tank outlet hose clamp (5) to the surge tank (2).

    4. Object Number: 814578 Size: SH
  4. Install the surge tank outlet hose (6) to the engine (2).
  5. Install the surge tank outlet hose clamp (3) to the engine (2).
  6. Install the surge tank outlet hose to the mounting clip.

    7. Object Number: 814572 Size: SH
  7. Install the surge tank outlet hose (3) to the mounting clip (2).

    8. Object Number: 362171 Size: SH
  8. Install the surge tank outlet hose to the heater core outlet pipe.

    9. Important: Firmly push the quick connect onto the heater core pipe until you hear an audible click.

  9. Pull the surge tank outlet hose to ensure the connection.
  10. Install the heater inlet hose to the heater core.

    11. Important: Firmly push the quick connect onto the heater core pipe until you hear an audible click.

  11. Pull the inlet heater inlet hose to ensure the connection.
  12. Fill the cooling system. Refer to Cooling System Draining and Filling .