GM Service Manual Online
For 1990-2009 cars only

Heater Outlet Hose Replacement LY7


Object Number: 1772679  Size: SF

Callout

Component Name

Preliminary Procedure

Drain the cooling system. Refer to Cooling System Draining and Filling .

1

Heater Outlet Hose Assembly

Tip

  1. Using J 38185 to reposition of the heater outlet hose clamps.
  2. Remove the heater outlet hose from the heater core and engine.

Special Tools

J 38185 Hose Clamp Pliers

Heater Outlet Hose Replacement LAT


Object Number: 1871138  Size: MF

Callout

Component Name

Preliminary Procedures

Partially drain the cooling system. Refer to Cooling System Draining and Filling .

1

Heater Outlet Hose Clamp (Qty: 2)

2

Heater Outlet Hose

Heater Outlet Hose Replacement LE5

Special Tools

J 38185 Hose Clamp Pliers

Warning: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.

Removal Procedure

  1. Partially drain the coolant. Refer to Cooling System Draining and Filling.
  2. Remove the surge tank from the surge tank bracket.

  3. Object Number: 872578  Size: SH
  4. Reposition the heater outlet hose clamp at the heater core using the J 38185 .
  5. Remove the heater outlet hose from the heater core.

  6. Object Number: 872575  Size: SH
  7. Reposition the heater outlet hose clamp at the engine using the J 38185 .
  8. Remove the heater outlet hose from the engine.

Installation Procedure


    Object Number: 872575  Size: SH
  1. Install the heater outlet hose to the engine.
  2. Reposition the heater outlet hose clamp at the engine using the J 38185 .

  3. Object Number: 872578  Size: SH
  4. Install the heater outlet hose to the heater core.
  5. Reposition the heater outlet hose clamp at the heater core using the J 38185 .
  6. Install the surge tank to the surge tank bracket.
  7. Fill the coolant. Refer to Cooling System Draining and Filling.