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: 1951003  Size: SH

    Important: Mark position of the heater outlet hose (3) and the heater outlet hose retaining clamp (1) before removal to make sure of correct alignment during assembly.

  4. Using J 38185 compress the heater outlet hose retaining clamp (1) and slide 50 mm (2 in) along the heater outlet hose (3).
  5. Disconnect the heater outlet hose (3) from the heater core pipe (2).

  6. Object Number: 1957882  Size: SH
  7. Detach the heater hose (1) quick connect fitting by releasing the retaining clip (3) with a suitable tool, from the heater pipe (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.

  1. Install the heater inlet hose.

  2. Object Number: 1955669  Size: SH

    Important: Listen for an audible click to confirm fitting.

  3. Connect the heater outlet hose (1) to the heater outlet pipe (2).

  4. Object Number: 1950865  Size: SH
  5. Connect the heater outlet hose (3) to the heater core pipe (2).
  6. Using J 38185 slide the heater outlet hose retaining clamp (1) back into the original position on the heater outlet hose (3).
  7. Refit the right side engine cover. Refer to Engine Cover Replacement
  8. Fill the cooling system. Refer to Cooling System Draining and Filling .