Water Pump Replacement 5.7L VIN P

Tools Required

J 39243 Driven Gear Assembly Remover

Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.

1. Disconnect the negative battery cable. Refer to

   Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

   in General Information.
2. Disconnect the electric engine coolant fan electrical connectors and remove the electric engine cooling fans. Refer to Electric Cooling Fan .



3. Remove the engine block coolant drain hole plug and the knock sensor.
4. Drain the cooling system. Refer to Cooling System Draining and Filling .
5. Install the coolant drain hole drain plug and the knock sensor.
6. Remove the air intake duct and the air cleaner.



7. Disconnect the inlet and outlet radiator hoses and clamps from the water pump.



8. Disconnect the inlet and outlet heater hoses from the water pump and the throttle body. Refer to Section 1A.



9. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.
10. Remove the Engine Coolant Temperature (ECT) sensor wiring harness retainer on the front of the water pump.
11. Reposition the coil and the bracket.



12. Remove the Secondary Air Injection (AIR) pump and the bracket.



13. Remove the bolts securing the water pump to the engine block.



14. Remove the water pump and the gaskets from the vehicle.
15. Remove the driveshaft coupling, and the water pump driveshaft seals using the J 39243 .

•	Inspect the o-ring seals on the water pump driveshaft and the drive assembly front cover for cracks and dryness. Replace any damaged o-ring seals.

•	Clean the engine block and water pump sealing surfaces.

Tools Required

Important: Before assembling the drive coupling, apply a light coat of chassis grease to the seals and the splines.




1. Install the water pump driveshaft coupling, with the groove toward the engine, and the driveshaft seals using the J 41546 and the J 39089 .
2. Using new water pump gaskets, with the tabs up, install the water pump.
3. Install the bolts of the water pump.

Tighten
Tighten the water pump bolts to 41 N·m (30 lb ft).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.




4. Install the AIR pump and the bracket.
5. Position the coil and the bracket.



6. Install the ECT sensor wire harness retainer on the front of the water pump and the electrical connector.



7. Connect the heater hoses to the water pump and the throttle body. Refer to Section 1B.



8. Connect the inlet and outlet radiator hoses and clamps to the water pump.
9. Install the air cleaner and the air intake duct.
10. Refill the cooling system. Refer to Cooling System Draining and Filling .
11. Install the electric engine coolant fans. Connect the electrical connectors to the electric engine coolant fans. Refer to Electric Cooling Fan .
12. Connect the negative battery cable.

Tighten
Tighten the negative battery cable to 15 N·m (11 lb ft).

13. Turn ON the engine. After the engine reaches normal operating temperature, check for coolant leaks.

Water Pump Replacement 3800 VIN K

Tools Required

J 36660-A Torque Angle Meter

Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.

1. Drain the coolant from the radiator to a level below the thermostat. Refer to Cooling System Draining and Filling .
2. Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
3. Remove the clamp and the inlet hose from the water pump.



4. Remove the water pump pulley bolts (6).
5. Remove the water pump pulley (7).
6. Remove the water pump bolts (5).
7. Remove the water pump (4).
8. Remove the water pump gasket (1).
9. Clean all of the gasket mating surfaces, including the water pump bolts.

1. Install a new water pump gasket (1).
2. Install the water pump (4). Align the water pump with the locator pins (3).
3. Use the J 36660-A in order to install the water pump bolts (5).

Tighten
Tighten the water pump bolts (5) to 15 N·m (11 lb ft ) plus 80°.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the water pump pulley (7) and the bolts (6).

Tighten
Tighten the water pump pulley bolts (6) to 13 N·m (115 lb in).

5. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
6. Connect the radiator inlet hose to the water pump.
7. Add the engine coolant. Refer to Cooling System Draining and Filling .
8. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.