GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Impala 🢒 Engine 🢒 Engine Electrical 🢒 Heater Outlet Hose Replacement

Heater Outlet Hose Replacement 3.4L

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: 466875 Size: SH
  2. UseJ 38185 in order to position aside the heater hose outlet clamp.
  3. Disconnect the heater outlet hose (2) from the outlet pipe.

    4. Object Number: 414213 Size: SH
  4. UseJ 38185 in order to position aside the heater core outlet hose clamp.
  5. Disconnect the heater outlet hose from the heater core.
  6. Remove the heater outlet hose.

Installation Procedure
  1. Install the heater outlet hose.

    2. Object Number: 414213 Size: SH
  2. Connect the heater outlet hose to the heater core.

    3. Important: Position heater core hose clamps in the indicated location.

  3. UseJ 38185 in order to secure the heater core hose outlet clamp.

    4. Object Number: 466875 Size: SH
  4. Connect the heater outlet hose (2) to the outlet pipe.
  5. UseJ 38185 in order to secure the heater hose outlet clamp.
  6. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.

Heater Outlet Hose 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 fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical-3.8L.
  3. UseJ 38185 in order to position aside the heater hose outlet clamp at the pipe adapter.
  4. Disconnect the heater outlet hose from the pipe adapter.

    5. Object Number: 1204093 Size: SH
  5. UseJ 38185 in order to position aside the heater core outlet hose clamp.
  6. Disconnect the heater outlet hose from the heater core.
  7. Remove the heater outlet hose from the support bracket.

Installation Procedure

    Object Number: 1204093 Size: SH
  1. Install the heater outlet hose to the support bracket.
  2. Connect the heater outlet hose to the heater core.
  3. Use J 38185 in order to secure the heater core hose outlet clamp.
  4. Connect the heater outlet hose to the pipe adapter.
  5. UseJ 38185 in order to secure the heater hose outlet clamp.
  6. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical-3.8L.
  7. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.