GM Service Manual Online
For 1990-2009 cars only

Radiator Replacement LY7

Special Tools

J 38185 Hose Clamp Pliers

Removal Procedure


    Object Number: 2008861  Size: SH
  1. Drain the coolant. Refer to Cooling System Draining and Filling.
  2. Remove the electric cooling fan assembly. Refer to Air Cleaner Inlet Duct Replacement.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  4. Remove the lower condenser mounting bolts.

  5. Object Number: 2008860  Size: SH
  6. Remove the upper condenser mounting bolts.

  7. Object Number: 2008864  Size: SH

    Note: Reposition the condenser to access the transmission oil cooler mounting bolts.

  8. Remove the transmission oil cooler (TOC) inlet pipe retaining bolt.
  9. Disconnect the transmission oil cooler inlet pipe from radiator.
  10. Remove the transmission oil cooler outlet pipe retaining bolt.
  11. Disconnect the transmission oil cooler outlet pipe from radiator.

  12. Object Number: 2008866  Size: SH
  13. Disconnect the lower retainer pins of the side air baffle from the radiator.
  14. Lower the vehicle.
  15. Remove the radiator support bracket bolts.
  16. Remove the radiator support brackets.

  17. Object Number: 2008852  Size: SH
  18. Use J 38185 to disconnect the surge tank inlet hose from the radiator. Reposition the hose aside.

  19. Object Number: 1334988  Size: SH
  20. Using J 38185 , loosen tension on the radiator inlet hose clamp and disconnect the hose from the radiator.
  21. Using J 38185 , loosen tension on the radiator outlet hose clamp and disconnect the hose from the radiator.
  22. Disconnect the upper retainer pins on the side air baffle from the radiator.
  23. Remove the radiator.

Installation Procedure


    Object Number: 1334988  Size: SH
  1. Install the radiator.
  2. Connect the upper retainer pins of the side air baffle to the radiator.
  3. Connect the radiator outlet hose to the radiator. Use J 38185 to position the radiator outlet hose clamp and secure the hose.
  4. Connect the radiator inlet hose to the radiator. Use J 38185 to position the radiator inlet hose clamp and secure the hose.

  5. Object Number: 2008852  Size: SH
  6. Connect the surge tank inlet hose to the radiator. Use J 38185 to position the hose clamp and secure the hose.
  7. Install the radiator support brackets.
  8. Caution: Refer to Fastener Caution in the Preface section.

  9. Install the radiator support bracket bolts.
  10. Tighten
    Tighten the bolts to 9 N·m (80 lb in).

  11. Raise and support the vehicle.

  12. Object Number: 2008866  Size: SH
  13. Connect the lower retainer pins of the side air baffle to the radiator.

  14. Object Number: 2008864  Size: SH
  15. Install the transmission oil cooler (TOC) inlet pipe retaining bolt.
  16. Tighten
    Tighten the bolts to 5 N·m (44 lb in).

  17. Install the transmission oil cooler outlet pipe retaining bolt.
  18. Tighten
    Tighten the bolts to 5 N·m (44 lb in).


    Object Number: 2008860  Size: SH
  19. Install the upper condenser mounting bolts.
  20. Tighten
    Tighten the bolts to 5.4 N·m (48 lb in).


    Object Number: 2008861  Size: SH
  21. Install the lower condenser mounting bolts.
  22. Tighten
    Tighten the bolts to 5.4 N·m (48 lb in).

  23. Lower the vehicle.
  24. Install the electric cooling fan assembly. Refer to Air Cleaner Inlet Duct Replacement.
  25. Fill the cooling system. Refer to Cooling System Draining and Filling.

Radiator Replacement LH2

Special Tools

J-38185 Hose Clamp Pliers

Removal Procedure


    Object Number: 1379896  Size: SH
  1. Drain the coolant. Refer to Cooling System Draining and Filling.
  2. Remove the electric cooling fan. Refer to Fan Replacement.
  3. Remove the upper condenser mounting bolts.

  4. Object Number: 1349581  Size: SH
  5. Remove the lower condenser mounting bolts.
  6. Disconnect the lower retainer pins of the side air baffle from the radiator.

  7. Object Number: 1350217  Size: SH

    Note: Reposition the condenser to access the transmission oil cooler mounting bolts.

  8. Remove the transmission oil cooler (TOC) mounting bolts.
  9. Remove the radiator upper oil cooler outlet pipe.
  10. Lower the vehicle.
  11. Remove the fan shroud. Refer to Engine Coolant Fan Shroud Replacement.
  12. Use J-38185 pliers to loosen the tension on the hose clamp. Remove the radiator outlet hose from the radiator.

  13. Object Number: 1364956  Size: SH
  14. Use J-38185 pliers to loosen the tension on the hose clamp. Remove the radiator inlet hose from the radiator.

  15. Object Number: 1334989  Size: SH
  16. Use J-38185 pliers to loosen the tension on the hose clamp. Remove the surge tank inlet hose from the radiator.
  17. Remove the oil cooler inlet pipe on the radiator.

  18. Object Number: 1334986  Size: SH
  19. Remove the radiator support bracket bolts.
  20. Remove the radiator support brackets.
  21. Disconnect the upper air baffle retaining pins from the radiator.
  22. Remove the radiator.

Installation Procedure


    Object Number: 1334986  Size: SH
  1. Install the radiator.
  2. Connect the upper air baffle retaining pins to the radiator.
  3. Install the radiator support brackets.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the radiator support bracket bolts and tighten to 9 N·m (80 lb in).

  6. Object Number: 1334989  Size: SH
  7. Connect the surge tank inlet hose to the radiator. Use J-38185 pliers to position the surge tank inlet hose clamp to secure the hose.

  8. Object Number: 1364956  Size: SH
  9. Connect the radiator inlet hose to the radiator. Use J-38185 pliers to position the radiator inlet hose clamp and secure the hose.
  10. Connect the radiator outlet hose to the radiator. Use J-38185 pliers to position the radiator outlet hose clamp and secure the hose.
  11. Install the radiator upper oil cooler inlet pipe.
  12. Install the fan shroud. Refer to Engine Coolant Fan Shroud Replacement.
  13. Raise and Support the vehicle.

  14. Object Number: 1350217  Size: SH
  15. Install the transmission oil cooler (TOC) mounting bolts and tighten to 5 N·m (44  lb in).
  16. Install the radiator upper oil cooler outlet pipe.
  17. Connect the lower retainer pins of the side air baffle to the radiator.
  18. Install the lower condenser mounting bolts and tighten to 5.4 N·m (48 lb in).
  19. Install the upper condenser mounting bolts and tighten to 5.4 N·m (48 lb in).
  20. Install the electric auxiliary cooling fan. Refer to Fan Replacement.
  21. Filling the cooling system. Refer to Cooling System Draining and Filling.