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You are watching: Bank 1 sensor 2 location chevy

I"m do the efforts to find the place of my financial institution 1 sensor 2, on mine 09 chevy impala ltz (3.9 engine )... And i can not discover it, I have looked anywhere google and also having no luck.. Might anyone tell me where it is? additionally I have actually heard from people telling that its a upstream and i had others telling me the a downstream sensor, so usually I"m in ~ a loss and confused.
Bank one is the left next of the engine - since your engine is a transverse mount, it would certainly be the front side of the engine facing the radiator. Sensor 2 is the downstream sensor (sensor one is the upstream sensor).
Do you understand where they space at? and also they guy at napa claimed its before the cat so therefore its upstream?
Do you recognize where they are at? and also they male at napa claimed its prior to the cat so therefore its upstream?
I used to very own a 2008 & 2011 Impala LTZ with the 3.9 engine - however no longer have the cars. I can not look because that the sensors any longer.

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Bank#1 is the financial institution that houses #1 cylinder. Sensor#2 is the downstream post-cat o2 sensor. Situate the bank#1 catalytic converter. Sensor #2 will certainly be after/behind the cat.
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