Water Outlet Replacement LA1

Tools Required

J 38185 Hose Clamp Pliers

1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-3.4L.
2. Drain the coolant until the coolant level is below the thermostat. Refer to Cooling System Draining and Filling .
3. Remove the crossover exhaust pipe. Refer to Exhaust Crossover Pipe Replacement in Engine Exhaust.
4. Remove the radiator hose from the thermostat housing.



5. Remove the thermostat housing bolts and clean any sealer from the bolt threads.
6. Remove the thermostat housing and gasket.



7. Remove the thermostat.
8. Clean the mating surfaces.

1. Install the thermostat.



2. Install the thermostat housing and gasket.
3. Install RTV sealer (GM P/N 1052366 or the equivalent) to the thermostat housing bolt threads.




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 thermostat housing bolts.

Tighten
Tighten the bolts to 25 N·m (18 lb ft).

5. Install the radiator hose to the thermostat housing.
6. Install the crossover exhaust pipe. Refer to Exhaust Crossover Pipe Replacement in Engine Exhaust.
7. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-3.4L.
8. Fill the cooling system. Refer to Cooling System Draining and Filling .

Water Outlet Replacement LY7

1. Drain the coolant until the coolant level is below the water outlet. Refer to Cooling System Draining and Filling .
2. Remove the upper radiator hose from the water outlet. Refer to Radiator Inlet Hose Replacement .

Important: Do not disconnect the power steering hoses or drain the power steering fluid.

3. Remove and reposition the power steering pressure hose and the power steering reservoir from the water outlet. Refer to Remote Power Steering Fluid Reservoir Replacement in Power Steering System.
4. Remove the water outlet bolts and the water outlet.
5. Remove and discard the water outlet seals.
6. Clean the water outlet sealing surfaces.

1. Install the NEW water outlet seals.

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.

2. Install the water outlet and the water outlet bolts.

Tighten
Tighten the water outlet bolts to 10 N·m (89 lb in).

3. Install the power steering reservoir and the power steering pressure hose bracket to the water outlet. Refer to Remote Power Steering Fluid Reservoir Replacement in Power Steering System.
4. Install the upper radiator hose to the water outlet. Refer to Radiator Inlet Hose Replacement .
5. Fill the cooling system. Refer to Cooling System Draining and Filling .