Yes and no. GM did put a 200,000 mile warranty on the 03 &04's. But they will only replace all 8 if they meet a certain criteria. Do a search you will find a load of information on the subject. I had 3 questionable injectors and they would only replace the 3.
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!