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: 1950865  Size: SH

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

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

  6. Object Number: 1955670  Size: SH
  7. Detach the heater inlet hose quick connect fitting by releasing the retaining clip (1) with a suitable tool, from the heater pipe (2).

  8. Object Number: 1955668  Size: SH
  9. Disconnect the heater inlet hose (1) from the heater inlet 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: 1955668  Size: SH

    Important: Listen for an audible click to confirm fitting.

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

  4. Object Number: 1950865  Size: SH
  5. Connect the heater inlet hose (3) to the heater core pipe (2).
  6. Using J 38185 slide the heater inlet hose retaining clamp (1) back into the original position on the heater inlet 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 .