GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

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

  2. Object Number: 466875  Size: SH
  3. UseJ 38185 in order to reposition the heater hose inlet clamp.
  4. Disconnect the heater inlet hose (3) from the inlet pipe.

  5. Object Number: 414213  Size: SH
  6. UseJ 38185 in order to reposition the heater core inlet hose clamp.
  7. Disconnect the heater inlet hose from the heater core.
  8. Remove the heater inlet hose.

Installation Procedure

  1. Install the heater inlet hose.

  2. Object Number: 414213  Size: SH
  3. Connect the heater inlet hose to the heater core.
  4. Important: Reposition heater core hose clamps in the indicated location.

  5. UseJ 38185 in order to reposition the heater core hose inlet clamp.

  6. Object Number: 466875  Size: SH
  7. Connect the heater inlet hose (3) to the inlet pipe.
  8. UseJ 38185 in order to reposition the heater hose clamp.
  9. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.