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In a 2008 Chevy Cobalt, you'll locate the coolant temperature sensor on the right side of the radiator near the thermostat housing. It's connected to a pair of wires that clip onto the sensor. The thermostat housing sits atop the coolant hose near the right cylinder head. Signs of a faulty temperature sensor include increased fuel consumption, black smoke or soot coming from the engine during acceleration, and the risk of overheating. Driving with a damaged sensor can lead to serious issues, so it's best to avoid using the vehicle in certain circumstances and instead have it checked and fixed at a repair shop. The cost of a new sensor ranges from $100 to $150, depending on its location and any additional repairs needed for proper function.
Is the drivers side the same as the right side?
The 2008 Chevy Cobalt has its coolant temperature sensor positioned on the right side of the radiator.