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04/03/2025 7:15 pm
Topic starter
2011 Buick Lacrosse 3.6L V6, Six speed auto, FWD
Hello,
I need to replace the bank one upstream O2 sensor. I've looked for a detailed video or set of instructions but cannot find any. Would anyone have the step by step process to replace the bank one (firewall side) upstream O2 sensor.
2 Answers
2
04/03/2025 8:04 pm
Use an O2 sensor socket.
1
04/03/2025 7:28 pm
Please put a brief description of your problem/symptoms in the post title. Not your vehicle. Thank you very much. (updated for you).
Would anyone have the step by step process
Check charm.li
So why are you replacing it?
@imperator Heater has failed in the O2 sensor; ECU driver test good.