found a 120mph cluster from my 97 silverado.
Are these plug and play or do they need programming for the mph to be correct?
Your going to have to try it, and see if it's off, and by how much. When I did mine, it was off IDK, maybe 8 or 10 MPH, I think. I have a jet flask tunner, so I just changed my tire size, to make it read correctly. That was a few years ago. I checked it yesterday, and it's spot on. Passed a county popo yesterday at 74 MPH in a 70 limit, and he never even looked at me twice. I double checked it with the wayz app, and it said 74 in a 70. My truck is also a 97. Other than that, it is a direct plug and play, but you may want to remove the clear plastic cover, and check your gauge steeper motors for looseness. Just bump each needle, to see how loose it is, or if there is some resistance. They should not just bounce around freely. If so, you may want to swap them out with the ones in your old cluster. They are a direct swap, but you have to replace each one, with the same one from your cluster. In other words, if the gas gauge is loose, you have to replace it with another gas gauge motor. You can not interchanging the gas gauge with the oil gauge motor, for example, or any other motor. Same for all of them. Oil can only be replaced with oil, temp, with temp, and bat with bat. I have swapped mine out, and repaired the gas gauge with some RC diff fluid. 10,000 visc. I have a thread on here about it, if you need.
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