Well the PCM is being sent back to ZZP. Zooomer needs to look into this. I did noticed that when I use my scanner to clear the SES codes, the oil pressure gauge functions normally for a few seconds and then flatlines again followed by the SES returning. I think this is just a matter of tweaking it, and installing the Rear O2 Delete. The car is still running great.

 

You are refering to having Zoomer set a permanent clear in the PCM for the rear O2 correct? I just want to make sure you don't purchase the O2 simulator as it doesn't work on 2004+ Monte's. In the past they sensor just checked O2, now they also check temperature and it hasn't been discovered where that is in the PCM yet.