How to Replace Downstream O2 Sensors 2003-07 Cadillac CTS
Created on: 2016-08-16
New O2 Oxygen Sensor from 1AAuto.com How to remove, install, change or replace an oxygen O2 sensor on 05, 06, 07 Cadillac CTS
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step 1 :Removing the O2 Sensors
- Locate the O2 sensor connector on the transmission
- Remove the safety on the connector
- Disconnect the O2 sensor connector
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step 2 :Installing the O2 Sensors
- Thread the O2 sensors into place
- Torque the O2 sensors to 40 foot-pounds with a torque wrench and O2 sensor socket
- Reconnect the O2 sensor connector
- Snap the safety into place
Tools needed
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Torque Wrench
O2 Sensor Socket
Jack Stands
22mm Wrench
Floor Jack
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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 be working on our 2006 Cadillac CTS 2.8-liter V6. We're going to be showing you how to remove, replace, or reinstall your rear O2 or downstream O2 sensors. If you find this video helpful, please click subscribe. We have a bunch more information on this vehicle, as well as any other makes and models. Also, if you'd like to put these parts on your vehicle, the link can be found on our description.
Here are the items you'll need for this repair: O2 sensor socket, 22mm wrench, torque wrench, jack and jack stands
We're going to use a lift to make this easier to show you guys at home, but you should be able to do this in the driveway with a jack and jack stands. Locate the O2 sensor connector on the transmission. This is going to be on the left side of the tranny, for the driver side O2 sensor, and the right side, for the passenger. This process is the same for either.
Remove the safety on the connector. Lift up and release the electrical connector for the O2 sensor. Using a 22mm wrench remove the O2 sensor from the exhaust. Disconnect the O2 sensor on the passenger side, and remove it the same way as the other.
Reinstall the O2 sensors into the bungs. Use an oxygen sensor socket. Torque the O2 sensors to 40 foot-pounds. Reconnect the connector at the side of the transmission. Snap the safety back into place. Repeat this step on the opposite side.
Thanks for tuning in. We hope this video helped you out. Next time you need parts for your car, please visit 1AAuto.com. Also check out our other helpful how-to and diagnosis videos.
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O2 Oxygen Sensor TRQ OSA61747
Part Details:
- Square
- M18x1.5-6e
- 22 mm
- 16.14 in
- Specific
- 4
- 18 mm
- Threaded
- 4
- 249 mm
- 9.8 in
- Female
- Planar
- Female
- Standard Replacement
- 410 mm
- Pressure Contact
- 0.87 in
- 0.71 in
- Narrow-Band
- Yes
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