Engine Coolant Thermostat Replacement RPO L61

1. Drain the cooling system. Refer to Cooling System Draining and Filling .



2. Remove the exhaust manifold heat shield.



3. Remove the bolts that secure the thermostat housing to the water pump feed pipe.



4. Remove the feed pipe.



5. Remove the thermostat and retaining sleeve, noting the orientation for installation.

1. Install the thermostat and retaining sleeve with the dimple placed into the housing slot.




Important: Lubricate the O-ring with soapy water or coolant before installing the O-ring in the water pump.

2. Install the feed pipe that connects the thermostat housing to the water pump.

Notice: Refer to Fastener Notice in the Preface section.




3. Install the bolt that secures the water pump feed pipe.

Tighten
Tighten the bolt to 10 N·m (18 lb in).




4. Install the exhaust manifold heat shield.

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

5. Fill the cooling system. Refer to Cooling System Draining and Filling .

Engine Coolant Thermostat Replacement RPO LSJ

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Remove the hoses from the thermostat housing cap.
3. Remove the thermostat housing cap and bolts.
4. Remove the thermostat.

1. Install the thermostat.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the thermostat housing cap bolts and cap.

Tighten
Tighten the bolt to 10 N·m (18 lb in).

3. Install the hoses to the thermostat housing cap.
4. Fill the cooling system. Refer to Cooling System Draining and Filling .