GM Service Manual Online
For 1990-2009 cars only

Radiator Replacement Gasoline

Removal Procedure

The type of radiator core varies according to the model and the engine type. The radiator assembly includes a shroud and may include an oil cooler in the core. You may need to remove the oil cooler on vehicles equipped with an oil cooler in order to ease removal of the radiator core. Refer to Power Steering Oil Cooler in Power Steering.

  1. Drain the coolant from the radiator. Refer to Cooling System Draining and Filling .

  2. Object Number: 165582  Size: SH
  3. Disconnect the transmission cooler lines.
  4. Disconnect the radiator inlet and outlet hoses.
  5. Disconnect the overflow hose from the radiator.
  6. Remove the fan shroud. Refer to Fan Shroud Replacement .

  7. Object Number: 182938  Size: SH
  8. Remove the upper mounting bracket bolts (1) from the radiator (3). Remove the bracket (2).
  9. Remove the filler neck hose from the radiator.
  10. Remove the radiator from the vehicle.

Installation Procedure

  1. Install the radiator into the vehicle.
  2. Install the filler neck hose on the radiator.

  3. Object Number: 182938  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the radiator upper mounting bracket (2) and the bolts (1).
  5. Tighten
    Tighten the bolts to 17 N·m (13 lb ft).


    Object Number: 165582  Size: SH
  6. Connect the transmission cooler lines.
  7. Install the fan shroud. Refer to Fan Shroud Replacement .
  8. Connect the overflow hose to the radiator.
  9. Connect the radiator inlet hose and the radiator outlet hose to the radiator.
  10. Add the coolant to the radiator. Refer to Cooling System Draining and Filling .
  11. 8.1. Remove the radiator cap.
    8.2. Start the engine. Allow the engine to run until the upper radiator hose is hot and the thermostat is open.
    8.3. Add the coolant while the engine is idling. Add the coolant until the coolant level reaches the bottom of the filler mark.
  12. Install the radiator cap. Ensure that the arrows line up with the overflow tube.
  13. Inspect the radiator for leaks.

Radiator Replacement Diesel

Removal Procedure

  1. Drain the coolant from the radiator. Refer to Cooling System Draining and Filling .
  2. Remove the air intake tube.
  3. Remove the windshield washer reservoir.
  4. Disconnect the hood release cable.
  5. Remove the upper fan shroud. Refer to Fan Shroud Replacement .
  6. Disconnect the upper radiator hose from the radiator.

  7. Object Number: 165582  Size: SH
  8. Disconnect the transmission cooler lines from the radiator.
  9. Remove the low coolant sensor.
  10. Disconnect the overflow hose from the radiator.
  11. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  12. Remove the lower radiator hose.

  13. Object Number: 182938  Size: SH
  14. Remove the radiator mounting bracket (1) from the radiator (2).

  15. Object Number: 182933  Size: SH
  16. Remove the upper radiator support bolts (1, 3) and the support (4) from the radiator (2).

  17. Object Number: 182918  Size: SH
  18. Remove the radiator from the vehicle.

Installation Procedure


    Object Number: 182918  Size: SH
  1. Install the radiator into the vehicle.

  2. Object Number: 182933  Size: SH
  3. Install the upper radiator support bolts (1, 3) and the support (4) from the radiator (2).

  4. Object Number: 182938  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the radiator mounting bracket (1) to the radiator (2).
  6. Tighten
    Tighten the bolts to 17 N·m (13 lb ft).

  7. Connect the lower radiator hose to the radiator.
  8. Lower the vehicle.
  9. Connect the overflow hose to the radiator.
  10. Install the low coolant sensor.

  11. Object Number: 165582  Size: SH
  12. Connect the transmission cooler lines to the radiator.
  13. Connect the upper radiator hose to the radiator.
  14. Install the upper fan shroud. Refer to Fan Shroud Replacement .
  15. Connect the hood release cable.
  16. Install the windshield washer reservoir.
  17. Install the air intake tube.
  18. Add coolant to the radiator. Refer to Cooling System Draining and Filling .
  19. 14.1. Remove the radiator cap.
    14.2. Start the engine. Allow the engine to operate until the upper radiator hose is hot and the thermostat is open.
    14.3. Add coolant while the engine at idle. Add the coolant until the coolant reaches the bottom of the filler neck.
  20. Install the radiator cap. Ensure that the arrows line up with the overflow tube.
  21. Inspect the radiator for leaks.