GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Avalanche - 2WD 🢒 Hybrid 🢒 Hybrid Energy Storage 🢒 Heater Inlet Hose Replacement

Heater Inlet Hose Replacement Non-HP2

Removal Procedure
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the air intake tube.
  3. Remove the heater and surge tank hoses from the mounting clip.

    4. Object Number: 12777 Size: SH
  4. Squeeze the plastic retainer release tabs.

    5. Object Number: 12778 Size: SH
  5. Pull the connection apart.

    6. Object Number: 363237 Size: SH
  6. Remove the inlet heater hose from the water pump.

    7. Object Number: 363118 Size: SH
  7. Remove the inlet heater hose.

Installation Procedure

    Object Number: 363118 Size: SH
  1. Install the inlet heater hose.

    2. Object Number: 363237 Size: SH
  2. Install the inlet heater hose to the water pump.

    3. Object Number: 21855 Size: SH
  3. Connect the heater hose to the heater core.

    4. Important: Firmly push the quick connect onto the heater core pipe until you hear an audible click.

  4. Install the heater and surge tank hoses to the mounting clip.
  5. Install the air intake tube.
  6. Fill the cooling system. Refer to Cooling System Draining and Filling .

Heater Inlet Hose Replacement Pump to Heater Core-HP2


Object Number: 1970642 Size: MF

Callout

Component Name

Preliminary Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  3. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement .
  4. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .

1

Heater Inlet Hose Quick Disconnect

Procedure

  1. Squeeze the plastic retainer release tabs and pull the connection apart.
  2. The joint should audibly click upon reassembly and the technician should pull back on the joint to ensure it's engaged properly.

2

Heater Inlet Hose Clamp

Procedure

Using J 38185 reposition the radiator surge tank outlet hose clamps.

Special Tools

J 38185 Hose Clamp Pliers

3

Heater Inlet Hose

Heater Inlet Hose Replacement Pump to Engine-HP2


Object Number: 1970648 Size: MF

Callout

Component Name

Preliminary Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  3. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement .
  4. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .

1

Heater Inlet Hose Clamp

Procedure

Using J 38185 reposition the radiator surge tank outlet hose clamps.

Special Tools

J 38185 Hose Clamp Pliers

2

Heater Inlet Hose