RPO Codes???
 

I am selling my car and a potential buyer asked me for my RPO codes. After emailing them to him, I decided to look them up.

The one that confuses me is GU2. It says I have 2.73 rear gears but I have a one on my center console and it came with Z rated tires.

Does another code change it later on? I was under the impression it had 3.23s.

Also would that guy have wanted the RPO codes just to get a better description, or was he looking for anything in particular that RPOs might identify?

-Sean