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How to Replace O2 Oxygen Sensor 04-07 Chevy Impala

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How to Replace O2 Oxygen Sensor 04-07 Chevy Impala

Created on: 2013-08-28

Learn from the 1A Auto experts, and watch this video to see how to change the downstream oxygen sensor on your 04-07 Chevy Impala

  1. step 1 :Removing the Oxygen (O2) Sensor
    • Raise and secure the vehicle
    • Remove the O2 sensor with an O2 sensor socket and a ratchet or a 7/8 inch wrench
    • Pull back the protective flashing covering the wiring harness
    • Disconnect the oxygen sensor wiring harness with pliers
  2. step 2 :Installing the New O2 Sensor
    • Twist the new O2 sensor into place
    • Tighten the O2 sensor with a 7/8 inch wrench
    • Connect the O2 sensor wiring harness
    • Lower the vehicle to the ground

Tools needed for replacement

  • General Tools

    Jack Stands

    Floor Jack

  • Pliers, Cutters & misc Wrenches

    Needle nose pliers

  • Ratchets & Related

    A Piece of Pipe (for leverage)

    Ratchet

    1/2 Inch Breaker Bar

  • Specialty Tools

    O2 Sensor Socket

Installation Video
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Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.

Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.

In this video, we're going to show you how to replace the rear or downstream oxygen sensor on this 2006 Chevy Impala. You'll either need a 7/8 inch oxygen sensor socket with a ratchet or breaker bar, or a 7/8 inch wrench. You'll also need a pair of pliers, jack and jack stands, and a new oxygen sensor from 1AAuto.com.

The downstream or rear oxygen sensor and harness, there, are located downstream of the catalytic converter. You can use a 7/8 inch wrench or that special O2 sensor socket that you see here. I'm using a pipe to get extra leverage. I try and break it free first with this, and if that doesn't work then I'm going to go ahead with the wrench. You can see here that I'm applying some pressure and it's just too tight. Maybe there's a little bit of corrosion between the O2 sensor and the exhaust. Before I damage the nut there, I'm going to go ahead and switch over to a traditional wrench. Now that I've broken it free, I'll go ahead and fast forward as I finish unscrewing that. Underneath the protective flashing there you'll find the connector. You'll need to first remove the little white tab that goes through the connector, so that you can then unclip it. It can be kind of tricky. You might need some needle-nose pliers to press that in. Then give it a good tug, but once you get that white little tab out, you'll be able to disconnect the connector. It won't hurt if you pull it down a little bit more, to get a little bit more room. Then lift up on the tab and disconnect the O2 sensor.

Going back in, make sure that you thread in and tighten up the oxygen sensor before you plug it in or you'll get your harness all twisted up. I'm going to use my 7/8 inch wrench again to go ahead and do that. Once I've done that I will clip in the connector there to the harness and put my little white tab back through that connector so it doesn't come loose, and then, press the protective flashing back up against the bottom of the chassis.

We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Floor Jack

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Ratchets & Related

  • A Piece of Pipe (for leverage)
  • Ratchet
  • 1/2 Inch Breaker Bar

  • Specialty Tools

  • O2 Sensor Socket

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00-08 Buick; Chevy; GMC; Pontiac; Saturn Multifit 4 Wire Oxygen Sensor

O2 Oxygen Sensor DIY Solutions EMS00292

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