There is no for sure way to tell exactly when the newer style injectors were installed, however, I estimate it to be about the time your truck was built...There is a good chance you have the updated parts. BUT, dont know for sure
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!