THERMOSTAT HOUSING REPLACEMENT

Removal Procedure

IMPORTANT: The thermostat is not serviceable separately. The thermostat housing (water pump inlet) and thermostat must be replaced as an assembly.

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

Loosen the air cleaner outlet duct clamps at the throttle body and at the Mass airflow (MAF) sensor.

2.

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Fig. 59: MAF/IAT Sensor & Air Cleaner Assembly Courtesy of GENERAL MOTORS CORP.

Remove the air cleaner outlet duct. 3.

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Fig. 60: View Of Water Pump Inlet & Thermostat Housing Courtesy of GENERAL MOTORS CORP.

Remove the radiator outlet hose. 4.

Remove the thermostat housing bolts. 5.

Remove the thermostat housing from the water pump.6.

Installation Procedure

Install the thermostat housing to the water pump. 1.

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Fig. 61: View Of Water Pump Inlet & Thermostat Housing Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE .

Install the thermostat housing bolts. 2.

Tighten: Tighten the bolts to 15 N.m (11 lb ft).

Install the radiator outlet hose. 3.

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Fig. 62: MAF/IAT Sensor & Air Cleaner Assembly Courtesy of GENERAL MOTORS CORP.

Install the air cleaner outlet duct. 4.

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Install the air cleaner outlet duct clamps at the throttle body and at the Mass airflow (MAF) sensor.

5.

Tighten: Tighten the air cleaner outlet duct clamp screws to 7 N.m (62 lb in).

Fill the cooling system. Refer to Draining and Filling Cooling System6.

© 2008 Mitchell Repair Information Co., LLC.

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