thermostat sensor 03 silverado 1500

Part 1 -How to Test the Thermostat (GM , , )

· 2. 3. When the thermostat, in your GM , or pick up, SUV, or van fails, it does one of two things: it stays stuck open or stuck closed. If it stays stuck closed, your pick up (van or SUV) will overheat. If it stays stuck open (or if it's missing), the engine will not warm up enough and the heater will not work (if its winter time).

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Chevrolet Silverado 1999-2006: How to Replace Thermostat ...

· The thermostat in your Silverado's cooling system is a temperature-controlled valve that contains a wax-based plastic pellet. This pellet detects the coolant heat by swelling as the temperature increases. Connected to the pellet is a mechanical valve that opens the thermostat and allows coolant to enter the radiator. Coolant that does not pass through the thermostat re-enters the engine ...

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Code P0128 - Coolant Temperature Below Thermostat ...

· Without a scan tool, the engine temperature sensor can be tested with an ohmmeter. The resistance across the sensor terminals should change with the temperature according to the chart that you can find in the service more: Engine coolant temperature sensor: how it works, symptoms, problems, testing. Testing the thermostat is difficult, as it may work most of the time, but …

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