[Chris Yates]

Installing new o2 sensors, but can't see how to remove the front passenger's side o2 sensor. I have an o2 socket but unable to get a ratchet on it from underneath. Any tips/suggestions would be welcome.

Thank you - Chris
2012 CTS-V

 

[tinman]

You're trying to unscrew the sensor, correct? (not disconnect the wires/harness). Everything I've read is that this is a real bitch. I've read where some have used a crow's foot and others have removed the entire cat to get to it. Sorry I can't be more help.