GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Regal 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Radiator Replacement

Removal Procedure

Tools Required

J 38185 Hose Clamp Pliers


    Object Number: 70049 Size: SH
  1. Remove 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.
  2. Drain the coolant. Refer to Cooling System Draining and Filling .

    3. Important: To prevent shearing of rubber bushing(s) loosen bolt(s) on engine strut(s) before swinging strut(s).

  3. Remove the engine strut brace bolts from the upper tie bar and rotate the strut(s) and brace(s) rearward. Refer to Engine Mount Strut Replacement and Engine Mount Strut Replacement in Engine Mechanical - 3.1L or Engine Mount Strut Replacement and Engine Mount Strut Replacement in Engine Mechanical - 3.8L.
  4. Remove the electric cooling fans. Refer to Engine Cooling Fan Replacement .
  5. Remove the upper radiator brackets and bolts.
  6. Use the J 38185 in order to reposition the hose clamps at the radiator.
  7. Disconnect the radiator inlet hose from the radiator.
  8. Disconnect the radiator outlet hose from the radiator.

    9. Object Number: 3348 Size: SH
  9. Remove the low coolant module. Refer to Coolant Level Module Replacement .
  10. Disconnect the transaxle oil cooler pipes from the radiator. Refer to one of the following:
    11. •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T60-E
    •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T60-E
    •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T65-E.
    •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T65-E.
  11. Remove the radiator.

Installation Procedure

    Object Number: 3348 Size: SH
  1. Install the radiator to the lower mounts.
  2. Connect the transaxle oil cooler lines to the radiator. Refer to one of the following:
    3. •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T60-E
    •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T60-E
    •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T65-E.
    •  Automatic Transmission Oil Cooler Pipes Replacement in Automatic Transaxle - 4T65-E.
  3. Install the low coolant module. Refer to Coolant Level Module Replacement .
  4. Install the radiator outlet hose.
  5. Install the radiator inlet hose.
  6. Use the J 38185 in order to reposition and install the hose clamps at the radiator.

    7. Object Number: 70049 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.

  7. Install the radiator brackets and bolts.

    8. Tighten
    Tighten the bolts to 24 N·m (18 lb ft)

  8. Install the electric cooling fans. Refer to Engine Cooling Fan Replacement .
  9. Install the engine mount struts. Refer to Engine Mount Strut Replacement and Engine Mount Strut Replacement in Engine Mechanical - 3.1L or Engine Mount Strut Replacement and Engine Mount Strut Replacement in Engine Mechanical - 3.8L.
  10. Fill the cooling system. Refer to Cooling System Draining and Filling .
  11. Install the air cleaner and the duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L or Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  12. Inspect for leaks.