GM Service Manual Online
For 1990-2009 cars only

Heater Outlet Pipe Replacement 3.1L

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 check valve.
  3. Disconnect the heater hoses from the heater outlet pipe using the J 38185 .

  4. Object Number: 414213  Size: SH
  5. Remove the heater outlet pipe.

Installation Procedure

  1. Connect the heater hoses to the heater outlet pipe using the J 38185 .
  2. Install the AIR check valve.

  3. Object Number: 414213  Size: SH
  4. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.

Heater Outlet Pipe Replacement 3.8L

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 check valve.
  3. Disconnect the heater hoses from the heater outlet pipe using the J 38185 .

  4. Object Number: 415893  Size: SH
  5. Remove the heater outlet pipe.

Installation Procedure


    Object Number: 415886  Size: SH
  1. Connect the heater hoses to the heater outlet pipe using the J 38185 .
  2. Install the AIR check valve.
  3. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.