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. Object Number: 527482  Size: SH
  3. Using the J 38185 loosen the inlet heater hose clamp from the heater core.
  4. Remove the inlet heater hoses from the heater core.

  5. Object Number: 527494  Size: SH
  6. Loosen the clamp and remove the inlet heater hose from the heater pipe adapter.

Installation Procedure


    Object Number: 527494  Size: SH
  1. Install the inlet heater hose to the heater pipe adapter.
  2. Reposition the clamp using the J 38185 .

  3. Object Number: 527482  Size: SH
  4. Install the inlet heater hose to the heater core.
  5. Reposition the clamp using the J 38185 .
  6. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.