I have an 03 ca. so. whats the cat look like (if i have one) ?

 

I think a Calif SO does. Just look for what looks like a small muffler between your muffler and turbo, that way you'll know for sure.

 

I here some say it could be a "rezonator" ?
Anyone have a pic. of a cat on an 03?

 

I don't but mine on my '05 is right under the driver's seat and is the size of an elongated beach ball kinda hard to miss mine.

 

I know there has to be a pic of this thing out there.......

 

anyone ...............?

 

check out this picture

https://www.dieseltruckresource.com/...cat=500&page=1

 

gatf4,

Yes that is a picture of an 04 and up Cat. The 03's look like the Cat on a car or truck only larger. They do not look like the one pictured.

Suffice it to say that if you purchased the vehicle in Ca when new you have a cat.

Rick