GM Service Manual Online
For 1990-2009 cars only

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
  3. Using the J 43181 disconnect the inlet heater hose from the heater core.
  4. 2.1. Install the J 43181 to the inlet heater core pipe.
    2.2. Close the tool around the inlet heater core pipe.
    2.3. Firmly pull the tool into the quick connect end of the heater hose.
    2.4. 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
  5. Remove the heater inlet hose (1) from the mounting clip (2).

  6. Object Number: 814578  Size: SH
  7. Reposition the heater inlet hose clamp from the engine.
  8. Remove the heater inlet hose (1) from the engine.
  9. Remove the heater inlet hose (1) from the vehicle.

Installation Procedure


    Object Number: 814578  Size: SH
  1. Install the heater inlet hose (1) to the vehicle.
  2. Install the heater inlet hose (1) to the engine.
  3. Install the heater inlet hose clamp to the engine.

  4. Object Number: 814572  Size: SH
  5. Install the heater inlet hose (1) to the mounting clip (2).

  6. Object Number: 362171  Size: SH
  7. Connect the heater inlet hose to the heater core.
  8. Important: Firmly push the quick connect onto the heater core pipe until you hear an audible click.

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