There are a couple of places where you can have the new cluster reprogrammed with the old mileage and engine hour information. You dealer can do this for you and you don't need any other disclosures, because everything is correct.
Ross
No more trucks, but this is what I used to have. 2000 GMC Sierra, 6.0L-LQ4, Built 4L60, LS6 Cam, The Other Guys Headers, 3 inch exhaust and 7 chamber flowmaster, 43lb injectors, Nelson Tuning, Drop - 3/4 McGaughys Spindles, Bell Tech Shackles & Hangers. Best time 13.59 @ 106