GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 38185 Hose Clamp Plier

Removal Procedure

  1. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  2. Remove the inlet hose clamp from the heater hose.
  3. Remove the inlet heater hose from the engine.

  4. Object Number: 1005435  Size: SH
  5. Remove the hose clamp (2) from the heater hose.
  6. Remove the inlet heater hose from the heater core.
  7. Remove the inlet heater hose bracket from the cab.

  8. Object Number: 1004585  Size: SH
  9. Remove the heater hose bracket bolt (1) from the radiator support.

  10. Object Number: 1284899  Size: SH
  11. Remove the heater hose clamp bolts (1) from the brackets.
  12. Using J 38185 , disconnect the heater hose from the heater pipe (2).
  13. Remove the heater hose from the vehicle.

Installation Procedure

  1. Install the inlet heater hose into the vehicle.

  2. Object Number: 1284899  Size: SH
  3. Using J 38185 , connect the heater hose to the heater pipe (2).
  4. Install the inlet heater hose clamp to the brackets.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the inlet heater hose mounting bolts (1).
  7. Tighten
    Tighten the bolts to 23 N·m (17 lb ft).


    Object Number: 1004585  Size: SH
  8. Install the heater hose bracket bolt (1) to the radiator support.
  9. Tighten
    Tighten the bolts to 23 N·m (17 lb ft).

  10. Install the heater hose bracket to the cab.

  11. Object Number: 1005435  Size: SH
  12. Install the hose clamp (2) to the heater core.
  13. Install the heater hose to the engine.
  14. Fill with engine coolant. Refer to Cooling System Draining and Filling .