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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Engine 🢒 Engine Cooling 🢒 Radiator Inlet Hose Replacement

Radiator Inlet Hose Replacement 6.6L

Removal Procedure

    Object Number: 674532 Size: SH
  1. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  2. Move the hose clamps back on the radiator inlet hose.
  3. Remove the radiator inlet hose from the radiator.
  4. Remove the radiator inlet hose from the water outlet tube.

Installation Procedure

    Object Number: 674532 Size: SH
  1. Install the radiator inlet hose to the water outlet tube.
  2. Install the radiator inlet hose to the radiator.
  3. Install the hose clamps on the radiator outlet hose.
  4. Fill the engine coolant. Refer to Cooling System Draining and Filling .

Radiator Inlet Hose Replacement 8.1L

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: 751424 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Reposition the inlet hose clamp at the radiator.
  3. Remove the inlet hose from the radiator.

    4. Object Number: 751425 Size: SH
  4. Reposition the inlet hose clamp at the water crossover.
  5. Remove the inlet hose from the water crossover.

Installation Procedure

    Object Number: 751425 Size: SH
  1. Install the inlet hose to the water crossover.
  2. Position the inlet hose clamp at the water crossover.

    3. Object Number: 72737 Size: SH
  3. Install the inlet hose to the radiator.
  4. Position the inlet hose clamp at the radiator.
  5. Fill the cooling system. Refer to Cooling System Draining and Filling .

Radiator Inlet Hose Replacement 4.3L

Removal Procedure

    Object Number: 360851 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Separate the mass airflow (MAF)/intake air temperature (IAT) sensor assembly and the air inlet tube by loosening the hose clamp.
  3. Disconnect the positive crankcase ventilation (PCV) hose from the air cleaner outlet duct.

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

    5. Object Number: 489176 Size: SH
  5. 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.

    6. Object Number: 1488707 Size: SH
  6. Reposition the radiator inlet hose clamp.
  7. Remove the radiator inlet hose from the radiator.

    8. Object Number: 1488709 Size: SH
  8. Reposition the radiator inlet hose clamp at the thermostat housing.
  9. Remove the radiator inlet hose from the thermostat housing.
  10. Remove the radiator inlet hose.

Installation Procedure

    Object Number: 1488707 Size: SH
  1. Install the radiator inlet hose to the radiator.
  2. Reposition the radiator inlet hose clamp at the radiator.

    3. Object Number: 1488709 Size: SH
  3. Install the radiator inlet hose to the thermostat housing.
  4. Reposition the radiator inlet hose clamp at the thermostat housing.
  5. Place the radiator inlet hose onto the support.

    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 Inlet 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 hose.
  4. Remove the air cleaner outlet duct.
  5. If necessary, remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .

    6. Object Number: 659465 Size: SH
  6. Remove the radiator vent inlet hose from the radiator inlet hose clips.

    7. Object Number: 1486075 Size: SH
  7. Reposition the inlet hose clamp at the radiator.
  8. Remove the inlet hose clip from the fan shroud.
  9. Remove the inlet hose (1) from the radiator.

    10. Object Number: 659418 Size: SH
  10. Reposition the inlet hose clamp at the water pump.
  11. Remove the inlet hose from the water pump.

Installation Procedure

    Object Number: 659418 Size: SH
  1. Install the inlet hose to the water pump.
  2. Position the inlet hose clamp at the water pump.

    3. Object Number: 1486075 Size: SH
  3. Install the inlet hose (1) to the radiator.
  4. Position the inlet hose clamp at the radiator.
  5. Install the inlet hose clip to the fan shroud.

    6. Object Number: 659465 Size: SH
  6. Install the radiator vent inlet hose to the radiator inlet hose clips.
  7. If necessary, install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .

    8. Object Number: 307286 Size: SH

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

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

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

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

Radiator Inlet 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 airflow/intake air temperature (MAF/IAT) sensor
  3. Remove the radiator inlet hose clip from the outlet hose.
  4. Remove the air cleaner outlet duct.
  5. If necessary, remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .

    6. Object Number: 659465 Size: SH
  6. Remove the radiator vent inlet hose from the radiator inlet hose clips.

    7. Object Number: 659416 Size: SH
  7. Reposition the inlet hose clamp at the radiator.
  8. Remove the inlet hose clip from the fan shroud.
  9. Remove the inlet hose from the radiator.

    10. Object Number: 659418 Size: SH
  10. Reposition the inlet hose clamp at the water pump.
  11. Remove the inlet hose from the water pump.

Installation Procedure

    Object Number: 659418 Size: SH
  1. Install the inlet hose to the water pump.
  2. Position the inlet hose clamp at the water pump.

    3. Object Number: 659416 Size: SH
  3. Install the inlet hose to the radiator.
  4. Position the inlet hose clamp at the radiator.
  5. Install the inlet hose clip to the fan shroud.

    6. Object Number: 659465 Size: SH
  6. Install the radiator vent inlet hose to the radiator inlet hose clips.
  7. If necessary, install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .

    8. Object Number: 307286 Size: SH

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

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

    Tighten
    Tighten the clamps to 6 N·m (35 lb in).

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