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2014 Chevy Traverse overheating, had the thermostat changed but it is still overheating. What else could be the source.
Hi @sweet_pc Don’t know your vehicle but are you losing coolant? If not, a check that you could do is with a cold engine, remove the radiator cap and then start the engine and allow it to warm up. Observe the coolant in the neck of the radiator. After a while when the engine warms the thermostat will open and you should see the coolant start to “flow” (or swirl) in the neck of the radiator indicating that it is being pumped through the system. As you have replaced the thermostat, if you don’t see this happening then the water pump is not operating correctly, perhaps due to an incorrectly tensioned serpentine belt slipping on the pump pulley or the pump itself may be faulty, a broken impeller perhaps, or if not the pump then perhaps there is a blockage in the radiator core. BE CAREFUL because as the coolant heats it will expand and flow out of the neck of the radiator. You only need to see the movement to prove that it is flowing. Switch off the engine as soon as you see the coolant flow in the neck of the radiator. Be SAFETY AWARE if you do this as the engine is running! Here’s a link to the owner manual for your vehicle. Scroll to Sect.10-12 to view how to check the coolant level etc. If you are losing coolant you need to check where the leak is and go from there. If there is no trace of a leak (coolant stains on engine parts or puddle under car) and you are losing coolant, you could either get the cooling system pressure tested to see if it is OK under pressure or you could also check the engine oil to see if it appears milky or if there is white smoke coming from the exhaust when the engine is running. If this is the case there may be a problem with the head gasket in the engine.
