compnine web site is back
 

http://www.compnine.com

This site lists the rpo codes for GM vins. It has been down since last October. I ran across it again and the site is working now. I really liked using it to find the options for cars listed on the internet and at dealers without calling them to ask questions that the salesman couldn't answer most of the time anyway.

Awesome! I was sick when it went away- seemingly unexplained. Glad it's back!