GM Service Manual Online
For 1990-2009 cars only

Heater Inlet Hose Replacement L61

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

  1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

  2. Object Number: 786506  Size: SH
  3. UseJ 38185 to release tension from the inlet heater hose clamp at the engine port.
  4. Disconnect the inlet heater hose (1) from the engine port.

  5. Object Number: 790922  Size: SH
  6. Use J 38185 to reposition the inlet heater hose clamp from the heater core.
  7. Disconnect the inlet heater hose (2) from the heater core.
  8. Remove the inlet heater hose.

Installation Procedure

  1. Install the inlet heater hose.

  2. Object Number: 790922  Size: SH
  3. Connect the inlet heater hose (2) to the heater core.
  4. Use J 38185 to reposition the inlet heater hose clamp onto the heater core.

  5. Object Number: 786506  Size: SH
  6. Connect the inlet heater hose (1) to the engine.
  7. Release tension on the inlet heater hose clamp.
  8. Fill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

Heater Inlet Hose Replacement LA1

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

  1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

  2. Object Number: 790882  Size: SH
  3. Use theJ 38185 to reposition the inlet heater hose clamp from the quick-connect fitting.
  4. Disconnect the inlet heater hose (1) from the quick-connect fitting.

  5. Object Number: 588344  Size: SH
  6. Use theJ 38185 to reposition the inlet heater hose clamp from the heater core.
  7. Disconnect the inlet heater hose from the heater core.
  8. Remove the inlet heater hose.

Installation Procedure

  1. Install the inlet heater hose.

  2. Object Number: 588344  Size: SH
  3. Connect the inlet heater hose to the heater core.
  4. Use theJ 38185 to reposition the inlet heater hose clamp onto the heater core.

  5. Object Number: 790882  Size: SH
  6. Connect the inlet heater hose (1) to the quick-connect fitting.
  7. Use theJ 38185 reposition the inlet hose clamp onto the quick connect fitting.
  8. Fill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.