GM Service Manual Online
For 1990-2009 cars only

Heater Inlet Pipe Adapter Replacement L26

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .

  3. Object Number: 415893  Size: SH
  4. Disconnect the heater inlet hose from the pipe adapter.
  5. Use J 38185 in order to position aside the heater hose clamp.

  6. Object Number: 415895  Size: SH
  7. Remove the heater pipe adapter mounting bolt.
  8. Remove the heater pipe adapter.

Installation Procedure

  1. Lubricate the O-ring with coolant.

  2. Object Number: 415895  Size: SH
  3. Install the heater pipe adapter.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the heater pipe adapter mounting bolt.
  6. Tighten
    Tighten the bolt to 6 N·m (53 lb in).


    Object Number: 415893  Size: SH
  7. Connect the heater inlet hose to the pipe adapter.
  8. Use J 38185 in order to secure the heater core hose clamp.
  9. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  10. Fill the cooling system. Refer to Cooling System Draining and Filling .