TrailBlazer 4WD L6-4.2L VIN S (2002)
Thermostat: Service and Repair
Thermostat Replacement
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Tools Required
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J 38185 Hose Clamp Pliers
Removal Procedure
1. Remove the necessary coolant from the radiator.
2. Loosen the outlet hose clamp at the water inlet (1) of the thermostat. Remove the outlet hose from the water inlet.
3. Remove the thermostat housing at the water inlet bolts.
4. Remove the thermostat housing from the engine block.
5. Clean all of the surfaces of the thermostat housing.
6. Clean the sealing surface of the engine block.
Installation Procedure