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In the 2009 Chevy Impala, the oil pressure sensor can be found at the rear of the engine on the oil lines. It's crucial to use high-quality oil for the engine to function properly. Eventually, issues may arise with the oil quality, which could lead to engine failure. A common sign of a problem is a strong burning smell, indicating the need for immediate attention to prevent potential hazards like explosions. You may also hear knocking noises from the engine and notice a decrease in gas mileage. It's important to change the oil every 5,000 to 10,000 miles to avoid engine problems.
In a 2009 Chevy Impala, you can find the oil pressure sensor positioned on the oil lines toward the back of the engine.
Right behind the exhaust manifold at the front of the engine, just higher than the oil filter.