Buick Regal: Radiator Cleaning

WARNING: NEVER spray water on a hot heat exchanger. The resulting steam could cause personal injury.

CAUTION: The heat exchanger fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

NOTE: Remove bugs, leaves, dirt and other debris by blowing compressed air through the engine side of the radiator.

• Some conditions may require the use of warm water and a mild detergent.
• Clean the A/C condenser fins.
• Clean between the A/C condenser and radiator.
• Clean the radiator cooling fins.
• Straighten any damaged cooling fins.

RADIATOR SURGE TANK REPLACEMENT

Removal Procedure

WARNING: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.

1.

Retainer (3) - Unclip.

2. { If equipped }Power Transfer Unit Vent Hose (4) - Position aside.

3. Clamp (2, 6) - Disengage - Hose Clamp Replacement Guidelines - Spring Type.

4. Engine Coolant Air Bleed Hose (1) @ Radiator Surge Tank - Remove.

5. Hose (5) @ Radiator Surge Tank - Remove.

6.

Radiator Surge Tank Bolt (2) - Remove.

7. Radiator Surge Tank (1) @ Radiator Surge Tank Bracket (3) - Remove.

8. Radiator Surge Tank (1) - Remove.

Installation Procedure

1.

Radiator Surge Tank (1) - Install.

2. Radiator Surge Tank (1) @ Radiator Surge Tank Bracket (3) - Install.

CAUTION: Refer to Fastener Caution.

3. Radiator Surge Tank Bolt (2) - Install and tighten9N.m (80 lb in).

4.

Hose (5) @ Radiator Surge Tank - Install.

5. Engine Coolant Air Bleed Hose (1) @ Radiator Surge Tank - Install.

6. Clamp (2, 6) - Install - Hose Clamp Replacement Guidelines - Spring Type.

7. { If equipped }Power Transfer Unit Vent Hose (4) - Reposition.

8. Retainer (3) - Install.

9. Fill the cooling system to the proper level. Cooling System Draining and Filling (Static) or Cooling System Draining and Filling (GE 47716).

10. Start the engine and check for coolant leaks.

RADIATOR SURGE TANK INLET HOSE REPLACEMENT (3.6L LGX)

Removal Procedure

1.

Radiator Surge Tank Inlet Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type.

2. Radiator Surge Tank Inlet Hose (2) @ Radiator Surge Tank - Remove.

3. Intake Manifold Cover - Remove - Intake Manifold Cover Replacement.

4.

Radiator Surge Tank Inlet Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type.

5. Radiator Surge Tank Inlet Hose (2) @ Engine Coolant Air Bleed Pipe - Remove.

6.

Radiator Surge Tank Inlet Hose Clip (1) @ Intake Manifold - Remove [2x].

7. Transfer components as necessary.

Installation Procedure

1.

Radiator Surge Tank Inlet Hose Clip (1) @ Intake Manifold - Install [2x]

2.

Radiator Surge Tank Inlet Hose (2) @ Engine Coolant Air Bleed Pipe - Install.

3. Radiator Surge Tank Inlet Hose Clamp (1) - Engage.

4. Intake Manifold Cover - Install - Intake Manifold Cover Replacement.

5.

Radiator Surge Tank Inlet Hose (2) @ Radiator Surge Tank - Install.

6. Radiator Surge Tank Inlet Hose Clamp (1) - Engage.

7. Fill the cooling system.

8. Start the engine and check for coolant leaks.

RADIATOR SURGE TANK INLET HOSE REPLACEMENT (2.0L LTG)

Preliminary Procedure

Drain the cooling system.

1. Radiator Surge Tank Inlet Hose Clamp [2x]

Procedure

Hose Clamp Replacement Guidelines - Spring Type

2. Radiator Surge Tank Inlet Hose

Procedure

1. Fill the cooling system.

2. Check the cooling system for leaks.

RADIATOR INLET HOSE REPLACEMENT (2.0L LTG)

Preliminary Procedure

Drain the cooling system.

1. Radiator Inlet Hose Clamp [2x]

Procedure

Reposition the radiator inlet hose clamps using GE-47622 Hose Clamp Pliers.

Special Tools GE-47622 Hose Clamp Pliers Special Tools

2. Radiator Inlet Hose

Procedure

1. Fill the coolant to the proper level.

2. Inspect for coolant leaks.

RADIATOR INLET HOSE REPLACEMENT (3.6L LGX)

Removal Procedure

1. Drain the cooling system.

2. Air Cleaner Assembly - Remove.

3. Engine Wiring Harness - Reposition.

4.

Radiator Inlet Hose Clamp (1) - Disengage.

5. Radiator Inlet Hose (2) @ Engine Coolant Thermostat Housing Inlet Pipe - Remove.

6.

Radiator Inlet Hose Clamp (1) - Disengage.

7. Radiator Inlet Hose (2) @ Radiator - Remove.

8. Radiator Inlet Hose (2) - Remove.

Installation Procedure

1.

Radiator Inlet Hose (2) @ Radiator - Install.

2. Radiator Inlet Hose Clamp (1) - Engage.

3.

Radiator Inlet Hose (2) @ Engine Coolant Thermostat Housing Inlet Pipe - Install.

4. Radiator Inlet Hose Clamp (1) - Engage.

5. Engine Wiring Harness - Install.

6. Air Cleaner Assembly - Install.

7. Fill the cooling system.

8. Start the engine and check for coolant leaks.

RADIATOR OUTLET HOSE REPLACEMENT (2.0L LTG)

Preliminary Procedures

1. Drain the cooling system.

2. Air Cleaner Outlet Duct Replacement.

1. Radiator Outlet Hose Clamp [2x]

Procedure

Reposition the radiator outlet hose clamps using GE-47622 Hose Clamp Pliers.

Special Tools GE-47622 Hose Clamp Pliers Special Tools

2. Radiator Outlet Hose

Procedure

1. Fill the coolant to the proper level.

2. Inspect for coolant leaks.

RADIATOR OUTLET HOSE REPLACEMENT (3.6L LGX WITHOUT ENGINE OIL COOLER)

Removal Procedure

1. Drain the cooling system.

2. Front Bumper Fascia - Remove.

3.

Radiator Outlet Hose Clamp (1) - Disengage.

4. Radiator Outlet Hose (2) @ Water Pump Inlet Pipe - Remove.

5.

Radiator Outlet Hose Clamp (1) - Disengage.

6. Radiator Outlet Hose (2) @ Radiator - Remove.

7. Radiator Outlet Hose (2) - Remove.

Installation Procedure

1.

Radiator Outlet Hose (2) @ Radiator - Install.

2. Radiator Outlet Hose Clamp (1) - Engage.

3.

Radiator Outlet Hose (2) @ Water Pump Inlet Pipe - Install.

4. Radiator Outlet Hose Clamp (1) - Engage.

5. Front Bumper Fascia - Install.

6. Fill the cooling system.

7. Start the engine and check for coolant leaks.

RADIATOR OUTLET HOSE REPLACEMENT (3.6L LGX WITH ENGINE OIL COOLER)

Removal Procedure

1. Drain the cooling system.

2. Front Bumper Fascia - Remove.

3.

Radiator Outlet Hose Clamp (1) - Disengage.

4. Radiator Outlet Hose (2) @ Water Pump Inlet Pipe - Remove.

5.

Radiator Outlet Hose Clamp (1) - Disengage.

6. Radiator Outlet Hose (2) @ Radiator - Remove.

7.

Radiator Outlet Pipe Bolt (1) @ Drivetrain and Front Suspension Cradle - Remove [2x].

8.

Radiator Outlet Hose Clamp (1) - Disengage.

9. Radiator Outlet Hose (2) @ Engine Oil Cooler - Remove.

10. Radiator Outlet Hose (2) - Remove.

Installation Procedure

1.

Radiator Outlet Hose (2) @ Engine Oil Cooler - Install.

2. Radiator Outlet Hose Clamp (1) - Engage.

3.

Radiator Outlet Hose (2) @ Radiator - Install.

4. Radiator Outlet Hose Clamp (1) - Engage.

5.

CAUTION: Refer to Fastener Caution.

Radiator Outlet Pipe Bolt (1) - @ Drivetrain and Front Suspension Cradle - Install and tighten [2x] 9 N.m (80 lb in).

6.

Radiator Outlet Hose (2) @ Water Pump Inlet Pipe - Install.

7. Radiator Outlet Hose Clamp (1) - Engage.

8. Front Bumper Fascia - Install.

9. Fill the cooling system to the proper level.

10. Start the engine and check for coolant leaks.

READ NEXT: