Please check fitment notes & description for accurate information.Chevrolet C2500 Base 7.4L 2000Chevrolet C3500 LS 7.4L 2000Chevrolet K3500 LS 7.4L 2000GMC C2500 Sierra 7.4L 2000GMC C3500 Sierra 7.4L 2000GMC K2500 Sierra 7.4L 2000 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. .
