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. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.0L.

  3. Object Number: 614455  Size: SH
  4. Using theJ 38185 loosen the heater outlet hose clamp.
  5. Remove the hose (1) from the heater pipe.

  6. Object Number: 527504  Size: SH
  7. Remove the outlet pipe (1) nut from the transaxle.

  8. Object Number: 614446  Size: SH
  9. Using theJ 38185 loosen the clamp from the back side of the thermostat housing.
  10. Remove the outlet pipe assembly (1).

Installation Procedure


    Object Number: 614446  Size: SH
  1. Install the outlet pipe assembly (1) to the thermostat housing and reposition the clamp.
  2. Position the outlet pipe (1) on the transaxle stud.

  3. Object Number: 527504  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the nut.
  5. Tighten
    Tighten the nut to 24 N·m (18 lb ft).


    Object Number: 614455  Size: SH
  6. Install the heater outlet hose (1) to the heater pipe.
  7. Using theJ 38185 reposition the clamp.
  8. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.0L.
  9. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.