Type:Heating TypeRepeatability:for 2013 Chevrolet TRAX Hysteresis:234-4529, 213-4764, 55572993 Linear:for 2012-2013 Chevrolet Sonic Measuring Range:234-4528, 55572216, 55574136 Resolution:Upstream, Sensor 1, Front, Pre Cat Sensitivity:for 2011-15 Chevrolet Cruze Sensor Type:Piezoelectric Origin:Mainland China OEM NO.:234-5135, 234-4488, 11787590713, 11787548961, 17107515499 Replaces OEM Part Number: 234-4529, 213-4764, 55572993 234-4528, 55572216, 55574136 Fit for: for Chevrolet Cruze 2011-2015 for Chevrolet Sonic 2012-2013 for Chevrolet TRAX 2013 Package included: 1up + 1down* Oxygen Sensor Note: Product description: 100% Brand New & High Quality Attention: Please double check the part number of your original items. If you are not sure is it suitable for your car, We are glad to help you to confirm the fitment . If you can not ensure the fitted problems, welcome to contact us. Must Know Before Buying: A: The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation. Use a 10-megaohm digital voltmeter. Hook up the voltmeter's red probe to the sensor's signal wire and the black probe to engine ground. (Use back probe method, DO NOT pierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes. Please take a video clip of the voltmeter and contact us if our sensor: Goes above range between 0.1 and 0.9 volt Remains below 0.5 volts Stays fixed at a particular voltage You're free to choose replacement or refund if our sensor fails to work, in this case.