Thermostat: Service and Repair

Thermostat Replacement (3.5L (L66))

Removal Procedure




1. Drain the coolant.
2. Remove the battery.
3. Remove the thermostat housing.
4. Remove the thermostat.

Installation Procedure




1. Install the thermostat with housing.

1. Install a new gasket.
2. Position the thermostat with the housing.
3. Apply thread sealant PST 565(R) to the bolt threads.

Notice: Refer to Fastener Notice.

4. Install the housing bolts.

Tighten the thermostat housing bolts 12 N.m (106 lb in).

2. Install the battery.
3. Fill the cooling system.