Water Pump Replacement

Removal Procedure





1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure.
2. Drain the coolant. Refer to Draining and Filling Cooling System.
3. Remove the intake air resonator. Refer to Intake Air Resonator Replacement in Powertrain Management.
4. Loosen, but do not remove the water pump pulley bolts.
5. Remove the front timing belt cover. Refer to Timing Belt Cover Replacement.
6. Remove the water pump pulley bolts.
7. Remove the water pump pulley.
8. Remove the water pump bolts.

Important: Use a catch basin to prevent the escaping coolant from contacting the timing belt.

9. Remove the water pump.
10. Clean the engine block sealing surfaces.

Installation Procedure





1. Coat the seal ring of the water pump with silicone grease, GM P/N 12345579 or equivalent.
2. Install the water pump.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the water pump bolts.
Tighten the water pump bolts to 25 Nm (18 ft. lbs.).
4. Install the water pump pulley.
5. Install the front timing belt cover. Refer to Timing Belt Cover Replacement.
6. Install the intake air resonator. Refer to Intake Air Resonator Replacement in Powertrain Management.
7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure.
8. Refill the cooling system. Refer to Draining and Filling Cooling System.