P0141 error code, which sensor to buy?

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speedblurr

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If I remember correctly, Bank 1 is Drivers Side, Sensor 2 is rear. So according to the link you would need the 234-4018 sensor that says downstream.

You might want to let someone else verify this too though.
 
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KPOD

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Alright thanks for the reply, yea that is the one I was thinking but I wasn't sure if I wanted to use that one or the universal one? I'm hold off for another day before ordering to see if anyone else will chime in.
 

speedblurr

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If it helps at all, I used the ACDelco ones when I redid my cats. I haven't had a problem with them. Not much difference in price though. And I am sure someone will chime in with which is better.
 

speedblurr

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Yea I think thats it. Pretty sure I used the 105 upstream and 106 downstream.

---------- Post added at 11:36 AM ---------- Previous post was at 11:35 AM ----------

Oh, just for the record, what yr is yours?
 

SunlitComet

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gm systems are picky about electrical specifications and the pcm variables were built around that. any out of design product can causes issues. delphi has also made improvement in the technology as well. and finally delco are delphi supplied parts for O2 sensors but with out the cost difference.
 

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