Buick Regal Owners & Service Manuals
Buick Regal 2018-2025 Service Manual / Engine / Engine Cooling / Repair Instructions / Auxiliary Water Pump Replacement (FWD)

Buick Regal: Auxiliary Water Pump Replacement (FWD)

Removal Procedure

1. Drain the cooling system.

2.

Engine Cooling

Steering Gear Heat Shield (2) - Remove.

3.

Engine Cooling

Heater Outlet Hose Clamp (1) - Disengage.

4. Heater Outlet Hose (2) @ Auxiliary Water Pump - Remove.

5.

Engine Cooling

Heater Coolant Pump Hose Clamp (1) - Disengage.

6. Heater Coolant Pump Hose (2) @ Auxiliary Water Pump - Remove.

7. Electrical Connector @ Auxiliary Water Pump - Disconnect.

8.

Engine Cooling

Auxiliary Water Pump Bolt (1) - Remove.

9.

Engine Cooling

Auxiliary Water Pump (1) - Remove.

Installation Procedure

1.

Engine Cooling

Auxiliary Water Pump (1) - Install.

2.

Engine Cooling

CAUTION: Refer to Fastener Caution.

Auxiliary Water Pump Bolt (1) - Install and tighten 9 N.m (80 lb in).

3. Electrical Connector @ Auxiliary Water Pump - Connect.

4.

Engine Cooling

Heater Coolant Pump Hose (2) @ Auxiliary Water Pump - Install.

5. Heater Coolant Pump Hose Clamp (1) - Engage.

6.

Engine Cooling

Heater Outlet Hose (2) @ Auxiliary Water Pump - Install.

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

8.

Engine Cooling

Steering Gear Heat Shield (2) - Install.

9. Fill the cooling system to the proper level.

10. Start the engine and check for coolant leaks.

AUXILIARY WATER PUMP REPLACEMENT (AWD)

Removal Procedure

1. Drain the cooling system.

2. Electrical Connector @ Auxiliary Water Pump - Disconnect.

3.

Engine Cooling

Auxiliary Water Pump Bolt (1) - Remove.

4. Lower the vehicle.

NOTE: Note the heater hose routing for proper installation.

5. Reposition the auxiliary water pump to access the Heater Hoses.

6.

Engine Cooling

Heater Coolant Pump Hose (2) @ Auxiliary Water Pump - Remove.

7.

Engine Cooling

Heater Outlet Hose (2) @ Auxiliary Water Pump - Remove.

8.

Engine Cooling

Auxiliary Water Pump (1) - Remove.

Installation Procedure

1.

Engine Cooling

Heater Outlet Hose (2) @ Auxiliary Water Pump - Install.

2.

Engine Cooling

Heater Coolant Pump Hose (2) @ Auxiliary Water Pump - Install.

3. Reposition the auxiliary water pump.

4. Raise the vehicle.

5.

Engine Cooling

CAUTION: Refer to Fastener Caution.

Auxiliary Water Pump Bolt (1) - Install and tighten 9 N.m (80 lb in).

6. Electrical Connector @ Auxiliary Water Pump - Connect.

7. Fill the cooling system to the proper level.

8. Start the engine and check for coolant leaks.

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