Where are the O2 sensors located?

2005 CHEVROLET SILVERADO
272,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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APRILDOTY0401
  • MEMBER
  • 1 POST
Help! Need to replace O2 sensors for bank1 sensor1 and bank1 sensor2. Needing locations and to know part numbers if needed? Please and thank you for all ya'll do!
Feb 18, 2023 at 8:24 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

Bank 1 on the engine is on the driver's side of the vehicle. If you look below, I highlighted where bank 1 sensor 1, and sensor 2 are located.

Pic two shows the manufacturer's part numbers.

Here is a link that you may find helpful:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Also, here is a link that explains how to check an O2 sensor:

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.
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Feb 18, 2023 at 2:10 PM
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