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Please check fitment notes & description for accurate information. 2000-2002 Chevrolet Astro 4.3L 2000-2002 GMC Safari 4.3L 2001-2002 Oldsmobile Aurora 3.5L 2001-2003 Oldsmobile Aurora 4.0L 2000-2002 Oldsmobile Intrigue 3.5L Oxygen Sensor's Location: How do I know the O2 sensor is good or not? Check engine light on A reduction in fuel economy. Your catalytic converter fails unexpectedly Exhaust emissions reach undesirable levels. How to install the oxygen sensor? .
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