GM Service Manual Online
For 1990-2009 cars only

Heater Outlet Hose Replacement L61

Removal Procedure


    Object Number: 931798  Size: SH
  1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. Remove the heater outlet hose clamp from the heater core.
  3. Remove the heater outlet hose from the heater core.

  4. Object Number: 931420  Size: SH
  5. Remove the heater outlet hose clamp from the engine.
  6. Remove the heater outlet hose from the engine.

Installation Procedure


    Object Number: 931420  Size: SH
  1. Install the heater outlet hose to the engine port.
  2. Install the heater outlet hose clamp to the engine port.

  3. Object Number: 931798  Size: SH
  4. Install the heater outlet hose to the heater core.
  5. Install the heater outlet hose clamp to the heater core.
  6. Fill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

Heater Outlet Hose Replacement L81

Removal Procedure


    Object Number: 933856  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  3. Remove the battery box. Refer to Battery Box Replacement in Engine Electrical.
  4. Move the the outlet hose splice clamp forward away from splice.
  5. Separate the front heater outlet hose from the rear heater outlet hose.

  6. Object Number: 931798  Size: SH
  7. Remove the rear heater outlet hose clamp from the heater core outlet pipe.
  8. Remove the heater outlet hose from the heater core outlet pipe.

  9. Object Number: 933846  Size: SH
  10. Remove the front heater outlet hose clamp from the engine port.
  11. Remove the front heater outlet hose clamp from the engine port.

Installation Procedure


    Object Number: 933846  Size: SH
  1. Install the heater outlet hose to the engine port.
  2. Install the heater outlet hose clamp to the engine port. The clamp should at the 3 o'clock position.

  3. Object Number: 931798  Size: SH
  4. Install the heater outlet hose to the heater outlet pipe.
  5. Install the heater outlet hose clamp to the heater outlet pipe. The clamp should at the 9 o'clock position.

  6. Object Number: 933856  Size: SH
  7. Install the front heater outlet hose to the rear heater outlet hose.
  8. Install the outlet hose splice clamp rearward to splice joint. The clamp should at the 9 o'clock position.
  9. Install the battery box. Refer to Battery Box Replacement in Engine Electrical.
  10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  11. Fill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.