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The 2003 Chevy TrailBlazer requires 6 quarts of oil for an oil change. It's important to change the oil regularly, ideally every 5,000 to 10,000 miles, to prevent engine problems. Using high-quality oil is crucial for a smooth engine performance. Neglecting oil changes can lead to issues like a strong burning odor, which should be checked immediately to avoid the risk of the car catching fire. Poor quality oil can cause the engine to fail, resulting in decreased gas mileage and potential knocking noises from the engine.
When you do an oil change for your 2003 Trailblazer, you will need 6 quarts of oil for the Vortec 5300 engine or 7 quarts for the Vortec 4200 engine.