There are only two kinds for 03, ones with the CA emissions package(Cat and EGR) and ones without. If your state requirements are higher than federal, you automatically get the CA package.
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!