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2003 Chevy suburban code p0154. I ran the scan tool graphs…

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2003 Chevy suburban code p0154...
2003 Chevy suburban code p0154. I ran the scan tool graphs to both banks upstream sensors, it’s showing graph movements. But I’m not sure if I really need the sensor since I hear stories when people replace O2 sensor and the code still exist. Thank you.
Submitted: 2 months ago.Category: Chevy
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Answered in 1 hour by:
5/31/2018
Chevy Mechanic: Peter Bagley, Auto Service Technician replied 2 months ago
Peter Bagley
Peter Bagley, Auto Service Technician
Category: Chevy
Satisfied Customers: 1,323
Experience: master tech
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Hello and welcome to just answer, my name is ***** ***** master tech of over 40 years experience here to help. I cannot see or hear your vehicle so I rely on your patience and input to my questions so I can help you better.I have read your notes and have a question before we proceed.

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Chevy Mechanic: Peter Bagley, Auto Service Technician replied 2 months ago

Does it show just one sensor/

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Chevy Mechanic: Peter Bagley, Auto Service Technician replied 2 months ago

I would recommend changing both up and down stream sensors as if one is failing the others close to and they feed off each other. One point though. there has to be a good ground from the exhaust to the body or this can hinder those oxy sensors for doing there thing. Most vehicle's have a braided ground strap from the exhaust to the body and it usually rusts off.

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Chevy Mechanic: Peter Bagley, Auto Service Technician replied 2 months ago

Let me know what you do and ur findings as to my recomendations

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Customer reply replied 2 months ago
Ok. Thank you very much.
Chevy Mechanic: Peter Bagley, Auto Service Technician replied 2 months ago

I will check back on your notes.

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Customer reply replied 2 months ago
Ok Thanks.
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