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I found the wire going into the PCM it was pin 28 on the small connector.Wire is good. What I also noticed is that the O2 sensor test is passed on the self diagnostic.But after the cat. test completed it showed up. I'm gonna try and smog it tomorrow and see what happens.

I found it. Now I just have to figure out which one is bank 2 sensor 2.

Nice,Thanks!I'll start digging for that. The PCM pinout diagram would be enough than.

So I need to how the signal gets from the O2 sensor to the computer. A related wiring diagram would be very heplful! Thanks!

So I was able to get to the connector today with a volt meter and it's good.I have the same reading on both ends. What could be the problem now?

Lucky You.That's how Mine should have been.maybe someone massed with it.As far as location the sensors are exactly the same a the pick above but the cnnectors are sitting right where the number 7 is.I'll take some pics later tonight.So for You guys are the connectors toward the front of the...

It's a '01 LS V8 for sure.It's got 4 oxygen sensors.one before the cat(sensor 1) and one after (sensor 2).The one after the cat is beside the transmission and the write harness it plugs into sits on top of the transmission.In order to access the connectors the crossmember have to be unbolted...

I can't even get to the connection with a tester since it's on top of the transmission.It was a PITA just to change the sensor I had to lower the tranny.Is there another way to get to that plug?

Hi I have the same problem with My car bank 2 sensor 2 is brand mew and showing 0 voltage.Did You ever find a solution? Thanks!