Engine Coolant Thermostat Housing Replacement 3.8 L

1. Open the radiator drain cock.
2. Drain the engine coolant to a level below the thermostat.
3. Close the radiator drain cock.

Tighten
Tighten the radiator drain cock to 2 N·m (18 lb in).

4. Disconnect the exhaust gas recirculation (EGR) valve electrical connector.



5. Remove the EGR valve outlet pipe bolt from the upper intake manifold.
6. Remove the EGR valve outlet pipe nut from the EGR valve adapter.
7. Remove the EGR valve pipe.



8. Remove the inlet hose from the water outlet.



9. Remove the water outlet bolts (1).
10. Remove the water outlet (2).

1. Install the water outlet (2).
2. Install the water outlet bolts (1).

Tighten
Tighten the water outlet bolts (1) to 27 N·m (20 lb ft).




3. Install the inlet hose to the water outlet.



4. Install the EGR valve pipe.
5. Install the EGR valve outlet pipe nut from the EGR valve adapter.

Tighten
Tighten the EGR valve outlet pipe nut to 29 N·m (21 lb ft).

6. Install the EGR valve outlet pipe bolt from the upper intake manifold.

Tighten
Tighten the EGR valve outlet pipe bolt to 29 N·m (21 lb ft).




7. Connect the EGR valve electrical connector.
8. Add engine coolant.

Engine Coolant Thermostat Housing Replacement 5.7 L

1. Open the radiator drain cock. Drain the engine coolant to a level below the thermostat.
2. Close the radiator drain cock.

Tighten
Tighten the radiator drain cock to 2 N·m (18 lb in).

3. Remove the radiator outlet hose from the water outlet.



4. Remove the water outlet housing bolts.
5. Remove the water outlet.

1. Thoroughly clean the water outlet and water pump surfaces.



2. Install the water outlet.
3. Install the water outlet bolts.

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




4. Install the radiator outlet hose to the water outlet.
5. Add engine coolant.