Hi,

I am trying to replace my 97 GLE's O2 sensors. Where could I find a diagram of the sensors' locations? or is there an instruction somewhere on how to replace them? Thank you.

 

2 on the downpipe (also called the Y pipe) and one is right behind the CAT. I have a Brand New Unopened rear O2 sensor (behind the cat) from Nissan for sale. PM me if interested. To remove, get some PBlaster or Kroil. soak it a day in advance. buy the O2 sensor socket (1/2 inch drive preferrably). twist and remove.