Removing rear O2 sensor on 01-newer PCMs -- Things you should know

[GOTIT4CHEAP16]

How about me? I have a 2000 chevy impala with a 2004 chevy impala ss bin for my l67 swap. Overkill turned the code off i think for my rear 02 sensor and i dont have it plugged in but the 02 sensor is still in there though.

[Sinister Performance]

How about me? I have a 2000 chevy impala with a 2004 chevy impala ss bin for my l67 swap. Overkill turned the code off i think for my rear 02 sensor and i dont have it plugged in but the 02 sensor is still in there though.

Turning the code off doesn't disable the diagnostic. It shouldn't matter what PCM you have, it matters what year the OS is that is in your PCM. If the entire calibration overkill put into your 2000 PCM is from a 2004, then it should have this diagnostic active unless overkill has found a way to completely disable it.