GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Remove the battery. Refer to Battery Replacement in Engine Electrical.
  2. Drain the cooling system. Refer to Cooling System Draining and Filling .

  3. Object Number: 368749  Size: SH
  4. Disconnect the cooling fan electrical connector.
  5. Remove the LH and RH engine mount strut braces. Refer to Engine Mount Strut Replacement in Engine Mechanical - 3.1L or Engine Mount Strut Replacement - Right Side and Engine Mount Strut Replacement - Left Side in Engine Mechanical - 3.8L.
  6. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L or Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  7. Remove the radiator inlet hose from the radiator.
  8. Remove the powertrain control module (PCM) harness from the fan shroud clip.

  9. Object Number: 788121  Size: SH
  10. Remove the cooling fan shroud bolts.
  11. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  12. Remove the push pin retainer from the lower left side of the fan shroud.
  13. Remove the transmission oil cooler lines from the retainer clip at the bottom of the cooling fan shroud.
  14. Remove the lower air deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement .

  15. Object Number: 455227  Size: SH
  16. Use J 38185 to remove the outlet hose clamp from the radiator.
  17. Remove the outlet hose from the radiator.
  18. Lower the vehicle.
  19. Remove the cooling fan shroud clip from the top of the radiator.

  20. Object Number: 788409  Size: SH
  21. Remove the radiator upper support brackets that connect to the fan shroud.
  22. Remove the fan motor heat shield.
  23. Remove the cooling fan shroud.
  24. Disconnect the transaxle oil cooler pipes from the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection in Automatic Transaxle - 4T65-E.
  25. Remove the coolant reservoir hose from the radiator overflow neck.
  26. Remove the radiator.

Installation Procedure


    Object Number: 455227  Size: SH
  1. Install the radiator to the lower mounts.
  2. Install the coolant reservoir hose to the radiator overflow neck.
  3. Install the transaxle oil cooler pipes to the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection in Automatic Transaxle - 4T65-E.
  4. Install the outlet hose to the radiator.
  5. Use J 38185 to install the outlet hose clamp to the radiator.
  6. Install the lower air deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement .

  7. Object Number: 788121  Size: SH
  8. Install the cooling fan shroud.
  9. 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.

  10. Install the cooling fan shroud bolts.
  11. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  12. Install the cooling fan shroud clip to the top of the radiator and fan shroud. Apply pressure in order to completely engage the clip onto the radiator and fan shroud.
  13. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  14. Install the push pin retainer to the lower left side of the fan shroud.
  15. Install the transmission oil cooler lines on to the retainer at the bottom of the cooling fan shroud.
  16. Lower the vehicle.
  17. Install the fan motor heat shields.

  18. Object Number: 788409  Size: SH
  19. Install the radiator upper support brackets and bolts that hold the fan shroud.
  20. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 368749  Size: SH
  21. Connect the cooling fan electrical connector.
  22. Install the radiator inlet hose to the radiator.
  23. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L or Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  24. Install the PCM harness on to the fan shroud clip.
  25. Install the LH and RH engine mount strut braces. Refer to Engine Mount Strut Replacement in Engine Mechanical - 3.1L or Engine Mount Strut Replacement - Right Side and Engine Mount Strut Replacement - Left Side in Engine Mechanical - 3.8L.
  26. Install the battery. Refer to Battery Replacement in Engine Electrical.
  27. Fill the cooling system. Refer to Cooling System Draining and Filling .
  28. Notice: Do NOT overfill the transaxle. The overfilling of the transaxle causes foaming, loss of fluid, shift complaints, and possible damage to the transaxle.

  29. Adjust the transaxle fluid level.