That's what the dealer just told me. Truck is in for check engine light, also abs/tcs, but that's a different problem. Dealer just called and told me 7th injector needs replaced, and said it should be replaced every 100k or so. I told them they should manufacture it better! Truck now has 725k, and I now I replaced it a little over a year ago.
they need to possibly be cleaned every 100K never heard about having to be replaced. but they do make very #### parts when it comes to that 7th injector.
