I have a 16 2500 with the G56. I had to have a new shock replaced at roughly 5k miles, after 3 tries at the local dealer to fix I ended up with a new tranny at 7k miles, now I just had the #4 injector replaced at 50k miles. All has been covered under warranty but wow, when I purchased this truck new 2 years ago I wouldn't have thought I would have these types of issues. Anyone else loose an injector with similar miles?