However, precise location can vary slightly depending on the exact engine configuration (e.g., 4.3L Vortec V6). A repair manual specific to your vehicle's VIN or engine code will provide the most accurate information. You can find these manuals online or at auto parts stores. A quick online search for "2001 Chevy Silverado 4.3L engine diagram" (or your specific engine size) may also yield images that show the sensor's location.