Water Pump: Service and Repair

Water Pump Replacement (4.8L, 5.3L, and 6.0L Engines)

Removal Procedure
1. Drain the cooling system.
2. Remove the air cleaner assembly.
3. Remove the fan blade.
4. Reposition the inlet hose clamp at the water pump.





5. Remove the inlet hose from the water pump.





6. Reposition the outlet hose clamp at the water pump.
7. Remove the outlet hose from the water pump.





8. Reposition the heater inlet hose clamp at the water pump.
9. Remove the heater inlet hose from the water pump.
10. Remove the accessory drive belt tensioner bolts and tensioner from the engine.





11. Remove the water pump bolts.
12. Remove the water pump and gaskets.
13. Discard the water pump gaskets.

Installation Procedure

Important: All gaskets surfaces are to be free of oil or other foreign material during assembly.

1. Install the water pump and NEW gaskets.





Notice: Refer to Fastener Notice in Service Precautions.

2. Install the water pump bolts.
2.1. Tighten the water pump bolts a first pass to 15 Nm (11 ft. lbs.).
2.2. Tighten the water pump bolts a final pass to 30 Nm (22 ft. lbs.).





3. Install the heater inlet hose to the water pump.
4. Position the heater inlet hose clamp at the water pump.





5. Install the outlet hose to the water pump.
6. Position the outlet hose clamp at the water pump.





7. Install the inlet hose to the water pump.
8. Position the inlet hose clamp at the water pump.
9. Install the accessory drive belt tensioner and bolts to the engine.
^ Tighten the bolts to 50 Nm (37 ft. lbs.).
10. Install the accessory drive belt.
11. Install the fan blade.
12. Install the air cleaner assembly.
13. Fill the cooling system.