Yes, RPO codes seem to be what you need, HOWEVER. To make a loooooong story short, the RPO code for my car had the wrong transmission listed. (I think it was changed out...bought it as a demo w/7000 miles on it) Created a nightmare for me when I had to change the CV bearing. Just an FYI.Where is it located or where can I get one. And where is the cabin filter if equipped