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How do you remove the thermostat from a '89 Silverado with a 350?
Wiki User
∙ 15y ago
Unhook the top radiator hose from the engine thermostat housing. Now take the 2 bolts out of the housing that the hose was hooked to, and take the thermostat out.
Scrape the old gasket off of engine and housing. Install new thermostat with spring
down, put gasket on engine install housing and both bolts. NOTE- Be sure that you tighten both bolts EVENLY AND A LITTLE AT A TIME UNTILL TIGHT. Now install
hose and fill with coolant.
Before you start the job MAKE SURE ENGINE IS COLD and you will need to drain
coolant first. If it seaps coolant around the housing, then tighten the 2 bolts more.
Wiki User
∙ 15y ago
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