So I purchased a ZZP off road down pipe and a ZZP PCM w/P0420, EGR and EVAP code deletes for my '05 LT.

I am now throwing a code that Auto Zone failed to give me the code number for, but it is "O2 Sensor malfunction, bank 1, sensor 2" This is the rear O2 sensor, and is not the same as the P0420 code. I cannot find any O2 emulators for the '05, and buying a new catt'ed down pipe is more than I want to spend.

So, what I am asking from all my MCF buddies is, what would you do?

Shell out for the Catt'ed DP?
Try to find a sensor Emulator, or get a "universal" one?
Disable the new code and hope it isn't replaced by another one?

 

Email ZZP, they probably just weren't expecting the code to come up on your vehicle. Tell them the code number and name, and they can delete it.

That's why I just went through and turned off all the related codes in my monte- because I noticed there were like 3 or 4 for each emission thing that all seemed related, even though some were not turned on from the factory.

 

If you can find and 02 emulator for a previous year like 2000-2004 3.4 or 3.8 it will be the same as for your car. the part number for a post cat 02 sensor is the same for many GM's and the harness end is all the same for 4 wire applications. only diff is wire length for most GM 4 wire 02's.