On a 2003 GMC Sonoma, the oil filter is located on the driver's side of the engine, near the front and below the exhaust manifold. It is typically positioned in a vertical orientation, making it accessible for removal and replacement, although some maneuvering may be necessary due to limited space. To reach it, you may need to remove the skid plate if your vehicle is equipped with one. Always ensure the engine is cool before attempting to change the oil filter.
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