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How do you change the thermostat in your 1990 Chevy Cheyenne 305 pickup truck?
Wiki User
∙ 12y ago
Drain out some of the coolant from the radiator, remove the two bolts that hold the thermostat housing, clean up the mating surfaces, replace the thermostat, install a new gasket, and bolt the housing back in place.
This is usually a pretty simple job requiring a minimum of tools and knowledge. Just watch out for leaks after completing, and make sure the radiator is completely refilled. Might want to check it a couple times after getting the engine fully warmed up and completely cooled down.
Wiki User
∙ 12y ago
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