GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 38185 Hose Clamp Pliers
    • J 43181 Heater Line Quick Connect Release Tool

Removal Procedure

  1. Drain the engine coolant. Refer to Cooling System Draining and Filling .

  2. Object Number: 1209593  Size: SH
  3. Using the J 43181 , release the inlet heater hose quick connect (1) from the heater core inlet.
  4. Position the inlet heater hose clamp (4) at the engine block using J 38185 .
  5. Remove the heater inlet hose (3) from the inlet hose fitting (6) at the engine block.
  6. Remove the heater inlet hose (3).

Installation Procedure


    Object Number: 1209593  Size: SH
  1. Apply coolant to the end of the heater inlet hose (5).
  2. Important: When installing a new heater inlet hose, place the clamps on the hose before installing the hose to the inlet hose fitting at the engine block.

  3. Install the heater inlet hose (3) to the inlet hose fitting (6) at the engine block.
  4. Position the inlet heater hose clamp (4) at the engine block using J 38185 .
  5. Install the heater inlet hose (3) to the heater core inlet.
  6. Press the quick connect (1) onto the heater core inlet until fully seated.
  7. Fill the engine cooling system. Refer to Cooling System Draining and Filling .