GM Service Manual Online
For 1990-2009 cars only

Heater Hose Assembly Replacement 6.0L Engine

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

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

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

  3. Object Number: 1949782  Size: SH

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

  4. Using J 38185 compress the heater hose retaining clamps (1) and slide 50 mm (2 in) along the heater hose (3).
  5. Disconnect the heater hoses (3) from the water pump housing (2).

  6. Object Number: 1950996  Size: SH

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

  7. Using J 38185 compress the heater hose retaining clamps (1) and slide 50 mm (2 in) along the heater hose (3).
  8. Disconnect the heater hoses (3) from the heater core pipes (2).
  9. Remove the heater hose assembly.

Installation Procedure


    Object Number: 1950996  Size: SH
  1. Connect the heater hoses (3) to the heater core pipes (2).
  2. Using J 38185 slide the heater hose retaining clamps (1) back into the original position on the heater hoses (3).

  3. Object Number: 1949782  Size: SH
  4. Connect the heater hoses (1) to the water pump housing (2).
  5. Using J 38185 slide the heater hose retaining clamps (1) back into the original position on the heater hoses (3).
  6. Fill the cooling system. Refer to Cooling System Draining and Filling .
  7. Install the engine cover.Refer to Engine Cover Replacement