CHEVY THERMOSTAT

2002 Chevrolet Trailblazer

Tiny

pudge68

February, 13, 2009 AT 7:56 PM

Engine Cooling problem
2002 Chevy Trailblazer 6 cyl Two Wheel Drive Automatic 106 K miles

How do you change the thermostat in a 2002 chevy trailblazer

FOUND 1146 RELATED QUESTIONS

5 Answers

Tiny

bluelightnin6

February, 13, 2009 AT 8:00 PM

REMOVAL:
Remove the necessary coolant from the radiator.
Remove the alternator.
Loosen the outlet hose clamp at the thermostat housing.
Remove the outlet hose from the thermostat housing.
Remove the thermostat housing bolts.
Remove the thermostat housing from the engine block.
Clean all of the surfaces of the thermostat housing.
Clean the sealing surface of the engine block.


http://www.2carpros.com/forum/automotive_pictures/261618_0900c15280066d61_3.jpg



INSTALLATION:
Install the thermostat housing to the engine block.
Install the thermostat housing bolts and tighten to 89 inch lbs. (10 Nm).
Lubricate the inner diameter of the radiator hose with engine coolant.
Install the outlet hose to the thermostat housing. Secure the hose with the clamp.
Install the alternator.
Fill the cooling system with specified coolant and concentration.
Inspect all sealing surfaces for leaks after starting the engine.

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Tiny

pudge68

February, 13, 2009 AT 8:10 PM

My thermostat is on the other side than the picture shows

Tiny

bluelightnin6

February, 13, 2009 AT 8:14 PM

What model is engine? What side, driver or passenger side?

Tiny

pudge68

February, 13, 2009 AT 8:15 PM

It is on the passenger side

Tiny

bluelightnin6

February, 13, 2009 AT 8:22 PM

Okay, procedures are still the same except you may not have to remove some of the extra components listed in the previous steps such as the alternator. Remove any component that blocks access and then follow the previous post instructions for removing the thermostat.

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