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 fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.

  3. Object Number: 663610  Size: SH
  4. Reposition the inlet heater hose clamp from the heater core use J 38185 .
  5. Remove the inlet heater hoses from the heater core.

  6. Object Number: 282306  Size: SH
  7. Reposition the inlet heater hose clamp from the water crossover pipe use J 38185 .
  8. Remove the inlet heater hose from the water crossover pipe.

Installation Procedure


    Object Number: 663610  Size: SH
  1. Install the inlet heater hose to the heater core.
  2. Important: Position the heater hose clamp in the indicated location.

  3. Reposition the the heater hose clamp to the heater core use J 38185 .

  4. Object Number: 282306  Size: SH
  5. Install the inlet heater hose to the water crossover pipe.
  6. Reposition the heater hose clamp to the water crossover pipe use J 38185 .
  7. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.