pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Thermostat Housing, Engine Cooling|Service and Repair|Page 3888 > < Thermostat, Engine Cooling|Specifications|Page 3884
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Thermostat Housing: Service and Repair

Engine Coolant Thermostat Housing Replacement

Removal Procedure

1. Remove the fuel injector sight shield. 
2. Drain the coolant until the coolant level is below the thermostat. 
3. Remove the crossover exhaust pipe.
4. Remove the radiator hose from the thermostat housing. 

5. Remove the thermostat housing bolts (2) and clean any sealer from the bolt threads.
6. Remove the thermostat housing (1).
7. Remove the thermostat (3).
8. Clean the mating surfaces.

Installation Procedure

1. Install the thermostat (3).
2. Install the thermostat housing (1).
3. Install RTV sealer, GM P/N 12378478 (Canadian P/N 88900041) or the equivalent, to the thermostat housing bolt threads.

Notice:  Refer to  Fastener Notice .

4. Install the thermostat housing bolts (2).

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

Thermostat Housing, Engine Cooling|Service and Repair|Page 3888 > < Thermostat, Engine Cooling|Specifications|Page 3884