In this guide, you will find instructions on how to replace the upstream oxygen sensor on a Chevrolet vehicle.

Symptoms

  • Check Engine Light is ON
  • A decrease in fuel economy
  • Engine Hesitation or misfire
  • Rough Idling

What you will need

Procedure

  1. Park your Chevrolet on level ground and set the parking brakes. 

  2. Pull the hood release under the dashboard on the driver's side. 

  3. Disconnect the negative battery terminal. Remove the plastic cover. Loosen the 10mm nut. Remove the negative clamp from the battery.disconect battery before you change Chevrolet  oxygen sensor
  4. Locate the oxygen sensor on the exhaust manifold. location of oxygen o2 sensor on Chevrolet  Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche etc.Downstream sensors Bank 1 Sensor 2 and Bank 2 Sensor 2 can be accessed from under the vehicle. Do not touch the sensor or the heat shield until the engine cools down.

  5. Disconnect the O2 sensor. Press the connector and pull it away to unplug the oxygen sensor. Use a flat head screwdriver to press the locking tab on the connector before you pull it.Chevrolet  disconnect oxygen sensor wire harness  applicable years: 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

  6. Place the oxygen sensor socket on the sensor and break it loose. If the sensor cannot be loosened spray penetrating oil and let it sit for at least 10 minutes. This will make it easier to remove the old Chevrolet oxygen sensor.Chevrolet  oxygen sensor socket

  7. Install the new oxygen sensor. Tighten the new Chevrolet oxygen sensor to the recommended torque. If you are not sure what the correct torque call your Chevy dealer.

  8. Connect the oxygen sensor wire harness by plugging it in. If you are using a universal oxygen sensor you will need to use the diagram that came with the sensor to find out which wires to connect.

  9. Reconnect the battery negative cable. 

This guide applies to vehicles such as Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche, etc.

All Chevrolet cars have at least two sensors with 6 and 8 cylinder engines having up to four. After you read the fault codes you will get a code that points to a bad oxygen sensor such as Bank 1 Sensor 1. This will allow you to identify which one of the oxygen sensors need to be replaced.

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Thank you! 

Visitor
Member since 2020-07

Hi, thanks by the information, i've a question. When i lunch the scan , i've obtained: System too lean , bank 1. So, i need to change the sensor at front or rear ? i read that the Uplander 2006 have two sensors. thanks

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