Water Pump: Service and Repair

Removal Procedure





1. Drain the coolant.
2. Loosen the water pump pulley bolts.
3. Remove the drive belt.





4. Remove the water pump pulley bolts.
5. Remove the water pump pulley.
6. Remove the water pump attaching bolts.
7. Remove the water pump.
8. Remove the water pump gasket.
9. Clean the water pump mating surfaces.

Installation Procedure

Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL or HAVOLINE DEX-COOL coolant. If Coolant other than DEX-COOL or HAVOLINE DEX-COOL is added to the system the engine coolant will require change sooner-at 50,000 km (30,000 mi) or 24 months.





1. Install the gasket.
2. Install the water pump.

Notice: Refer to Fastener Notice in Service Precautions

3. Install the water pump mounting bolts.

^ Tighten the water pump bolts to 1O Nm (89 inch lbs.).





4. Install the water pump pulley. Loosely install the mounting bolts.
5. Install the drive belt.
6. Install the water pump pulley bolts.

^ Tighten the water pump pulley bolts to 25 Nm (18 inch lbs.).

Important: Properly filling a system that has been completely drained will require the use the air bleed vents.

7. Refill the coolant.
8. Inspect for leaks.