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 outlet clamp.
  4. Disconnect the heater outlet hose (2) from the outlet pipe.

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

Installation Procedure

  1. Install the heater outlet hose.

  2. Object Number: 414213  Size: SH
  3. Connect the heater outlet 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 outlet clamp.

  6. Object Number: 466875  Size: SH
  7. Connect the heater outlet hose (2) to the outlet pipe.
  8. UseJ 38185 in order to reposition the heater hose outlet clamp.
  9. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.