GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

    Caution: Refer to Safety Glasses Caution in the Preface section.

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the engine cover. Refer to Engine Cover Replacement .

  3. Object Number: 2041021  Size: SH

    Important: Mark the position of the heater outlet hose (1) and the heater outlet hose retaining clamp (2) before removal to make sure of correct alignment during assembly.

  4. Using J 38185 compress the heater outlet hose retaining clamp (2) and slide along the heater outlet hose (1).
  5. Disconnect the heater outlet hose (1) from the heater core outlet pipe (3).

  6. Object Number: 2041019  Size: SH

    Important: Using a suitable tool, detach the heater outlet hose (1) by releasing the heater outlet hose quick connect fitting retaining clip (3).

  7. Detach the heater outlet hose (1) from the heater outlet pipe quick connect fitting (2).

  8. Object Number: 1955669  Size: SH
  9. Remove the heater outlet hose (1) from the heater outlet pipe (2).

Installation Procedure

    Caution: Refer to Installing Hoses without Twists or Bends Notice in the Preface section.


    Object Number: 2041021  Size: SH

    Important: If reusing the heater outlet hose (1), align the heater outlet hose (1) with the marks made on the heater core outlet pipe (3) during the removal procedure.

  1. Connect the heater outlet hose (1) to the heater core outlet pipe (3).
  2. Using J 38185 J 38185 slide the heater outlet hose retaining clamp (2) back into the original position on the heater outlet hose (1).

  3. Object Number: 1955669  Size: SH

    Important: Listen for an audible click to confirm fitting.

  4. Connect the heater outlet hose (1) to the heater outlet pipe (2).
  5. Refit the right side engine cover. Refer to Engine Cover Replacement .
  6. Fill the cooling system. Refer to Cooling System Draining and Filling .