GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Engine 🢒 Engine Cooling 🢒 Radiator Outlet Hose Replacement

Radiator Outlet Hose Replacement 6.6L

Removal Procedure

    Object Number: 659059 Size: SH
  1. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  2. Remove the upper and lower fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement and Engine Coolant Fan Lower Shroud Replacement .
  3. Remove the surge tank outlet hose (2) from the surge tank.

    4. Object Number: 674559 Size: SH
  4. Remove the radiator outlet hose from the water pump.

    5. Object Number: 674543 Size: SH
  5. Remove the heater outlet hose from the radiator outlet hose.
  6. Remove the radiator outlet hose from the radiator.
  7. Remove the radiator outlet hose clip retainers from the brackets.
  8. Remove the radiator outlet hose from the vehicle.

Installation Procedure

    Object Number: 674543 Size: SH
  1. Install the radiator outlet hose to the vehicle.
  2. Install the radiator outlet hose and clamp to the radiator. Ensure the hose is positioned properly in order to prevent interference with the fan shroud.
  3. Install the radiator outlet hose clip retainers to the brackets.

    4. Object Number: 659059 Size: SH
  4. Install the surge tank outlet hose (2) to the surge tank.

    5. Object Number: 674559 Size: SH
  5. Install the radiator outlet hose and clamp to the water pump.
  6. Install the heater outlet hose to the radiator outlet hose.
  7. Install the upper and lower fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement and Engine Coolant Fan Lower Shroud Replacement .
  8. Fill the engine coolant. Refer to Cooling System Draining and Filling .

Radiator Outlet Hose Replacement 8.1L

Tools Required

J 43181 Heater Line Quick Connect Release Tool

Removal Procedure

Important: Most truck models use a spring-type hose clamp at the hose connections. When using this type of clamp, install the radiator hoses on dry, non-painted surfaces in order to ensure proper sealing. Reusing the spring-type clamps on aftermarket hoses is not recommended.


    Object Number: 1275812 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the radiator outlet hose from the radiator. Refer to Radiator Hose Quick Connect Fitting .

    3. Object Number: 362171 Size: SH
  3. Using the J 43181 disconnect the heater hoses from the heater core outlet.
    4. 3.1. Install the J 43181 to the heater core pipe.
    3.2. Close the tool around the heater core pipe.
    3.3. Firmly pull the tool into the quick connect end of the heater hose.
    3.4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.

    Object Number: 659059 Size: SH
  4. Reposition the surge tank outlet hose clamp at the surge tank.
  5. Remove the surge tank outlet hose (2) from the surge tank.

    6. Object Number: 751427 Size: SH
  6. Reposition the outlet hose clamp the water pump.
  7. Remove the outlet hose from the water pump.

Installation Procedure

    Object Number: 751427 Size: SH
  1. Install the outlet hose to the water pump.
  2. Position the outlet hose clamp to the water pump.

    3. Object Number: 659059 Size: SH
  3. Install the surge tank outlet hose (2) from the surge tank.
  4. Position the surge tank outlet hose clamp to the surge tank.

    5. Object Number: 362171 Size: SH
  5. Connect the heater and surge tank hoses to the heater core.

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


    Object Number: 1275812 Size: SH
  6. Install the radiator outlet hose to the radiator. Refer to Radiator Hose Quick Connect Fitting .
  7. Fill the cooling system. Refer to Cooling System Draining and Filling .

Radiator Outlet Hose Replacement 4.3L

Removal Procedure

    Object Number: 360851 Size: SH
  1. Separate the mass airflow (MAF)/intake air temperature (IAT) sensor assembly and the air inlet tube by loosening the hose clamp.
  2. Disconnect the positive crankcase ventilation (PCV) hose from the air cleaner outlet duct.

    3. Object Number: 489179 Size: SH
  3. Remove the air inlet tube and resonator retaining wing nut.

    4. Object Number: 489176 Size: SH
  4. Remove the air inlet tube and resonator from the throttle body by pivoting the air inlet tube and resonator upward until the hinge clip releases from the lip on the throttle body.
  5. Drain the cooling system. Refer to Cooling System Draining and Filling .

    6. Object Number: 367001 Size: SH
  6. Reposition the radiator outlet hose clamps at the surge tank and water pump.
  7. Remove the radiator outlet hose from the surge tank.
  8. Remove the radiator outlet hose from the water pump.

    9. Object Number: 1488719 Size: SH
  9. Reposition the radiator outlet hose clamp at the radiator.
  10. Remove the radiator outlet hose from the radiator.
  11. Remove the radiator outlet hose.

Installation Procedure

    Object Number: 1488719 Size: SH
  1. Install the radiator outlet hose to the radiator.
  2. Reposition the radiator outlet hose clamp at the radiator.

    3. Object Number: 367001 Size: SH
  3. Install the radiator outlet hose to the water pump.
  4. Install the radiator outlet hose to the surge tank.
  5. Reposition the radiator outlet hose clamps at the surge tank and water pump.

    6. Object Number: 489176 Size: SH
  6. Align the hinge clip with the lip on the throttle body.

    7. Install the air inlet tube and resonator to the throttle body by pivoting the air inlet tube and resonator downward until the mounting stud is through the hole in the air inlet tube.


    Object Number: 489179 Size: SH
  7. Install the resonator retaining wing nut.
  8. Connect the PCV hose to the air cleaner outlet duct.

    9. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 360851 Size: SH
  9. Install the MAF/IAT sensor assembly and the air inlet duct.

    10. Tighten
    Tighten the clamps to 4 N·m (35 lb in).

  10. Fill the cooling system. Refer to Cooling System Draining and Filling .

Radiator Outlet Hose Replacement 4.8L, 5.3L, and 6.0L

Removal Procedure

    Object Number: 307286 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Loosen the air cleaner outlet duct clamps at the following locations:
    3. • Throttle body
    • Mass airflow/intake air temperature (MAF/IAT) sensor
  3. Remove the radiator inlet hose clip from the outlet duct.
  4. Remove the air cleaner outlet duct.

    5. Object Number: 659509 Size: SH
  5. Reposition the outlet hose clamp at the water pump.
  6. Remove the outlet hose from the water pump.

    7. Object Number: 1486075 Size: SH
  7. Reposition the outlet hose clamp at the radiator.
  8. Remove the outlet hose (6) from the radiator.

Installation Procedure

    Object Number: 1486075 Size: SH
  1. Install the outlet hose (6) to the radiator.
  2. Position the outlet hose clamp at the radiator.

    3. Object Number: 659509 Size: SH
  3. Install the outlet hose to the water pump.
  4. Position the outlet hose clamp at the water pump.

    5. Object Number: 307286 Size: SH

    Important: Align the arrow at the throttle body end of the duct with the throttle body attaching stud.

  5. Install the air cleaner outlet duct.
  6. Install the radiator inlet hose clip to the outlet duct.
  7. Tighten the air cleaner outlet duct clamps at the following locations:
    8. • Throttle body
    • MAF/IAT sensor

    Tighten
    Tighten the clamps to 4 N·m (35 lb in).

  8. Fill the cooling system. Refer to Cooling System Draining and Filling .

Radiator Outlet Hose Replacement 5.3L w/RPO HP2

Removal Procedure

    Object Number: 307286 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Loosen the air cleaner outlet duct clamps at the following locations:
    3. • Throttle body
    • Mass air flow (MAF)/intake air temperature (IAT) sensor
  3. Remove the radiator inlet hose clip from the outlet duct.
  4. Remove the air cleaner outlet duct.

    5. Object Number: 659509 Size: SH
  5. Reposition the outlet hose clamp from the water pump.
  6. Remove the outlet hose from the water pump.

    7. Object Number: 349061 Size: SH
  7. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  8. Remove the bolts from the engine shield.
  9. Remove the engine shield from the vehicle.

    10. Object Number: 1206685 Size: SH
  10. Reposition the radiator outlet hose clamp (2) from the starter/generator stator cooler inlet pipe (3).
  11. Remove the radiator outlet hose (1) from the starter/generator stator cooler inlet pipe (3).

    12. Object Number: 659511 Size: SH
  12. Reposition the outlet hose clamp from the radiator.
  13. Remove the outlet hose from the radiator.

Installation Procedure

    Object Number: 659511 Size: SH
  1. Install the outlet hose to the radiator.
  2. Position the outlet hose clamp to the radiator.

    3. Object Number: 1206685 Size: SH
  3. Install the radiator outlet hose (1) to the starter/generator stator cooler inlet pipe (3).
  4. Position the radiator outlet hose clamp (2) to the starter/generator stator cooler inlet pipe (3).

    5. Object Number: 349061 Size: SH
  5. Install the engine shield to the vehicle.

    6. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the bolts to the engine shield.

    7. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).

  7. Lower the vehicle.

    8. Object Number: 659509 Size: SH
  8. Install the outlet hose to the water pump.
  9. Position the outlet hose clamp to the water pump.

    10. Object Number: 307286 Size: SH

    Important: Align the arrow at the throttle body end of the duct with the throttle body attaching stud.

  10. Install the air cleaner outlet duct.
  11. Install the radiator inlet hose clip to the outlet duct.
  12. Tighten the air cleaner outlet duct clamps at the following locations:
    13. • Throttle body
    • MAF/IAT sensor

    Tighten
    Tighten the clamps to 4 N·m (35 lb in).

  13. Fill the cooling system. Refer to Cooling System Draining and Filling .