GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 38185 Hose Clamp Pliers

  1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.

  2. Object Number: 414214  Size: SH
  3. UseJ 38185 in order to position aside the heater hose inlet and/or outlet clamp at the pipe adapter.
  4. Disconnect the heater inlet hose and/or the outlet hose from the inlet and/or outlet pipe.

  5. Object Number: 414213  Size: SH
  6. UseJ 38185 in order to position aside the heater core inlet and/or outlet hose clamp.
  7. Disconnect the heater inlet hose and/or the outlet hose from the heater core.
  8. Remove the heater inlet hose and/or the outlet hose.

Installation Procedure

  1. Install the heater inlet hose and/or outlet hose.
  2. Important: Position heater core hose clamps in the indicated location.


    Object Number: 414213  Size: SH
  3. Connect the heater inlet hose and/or the outlet hose to the heater core.
  4. UseJ 38185 in order to secure the heater core hose inlet and/or outlet clamp.

  5. Object Number: 414214  Size: SH
  6. Connect the heater inlet hose and/or the outlet hose to the inlet and/or outlet pipe.
  7. UseJ 38185 in order to secure the heater hose inlet and/or outlet clamp.
  8. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.