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You need to be more specific on what's working and what's not working on the cluster.
Possibly a loose wiring issue.
What's the history on this issue?
What but the other displays on the cluster?
Simple check first, fusebox under the hood #4, #7 are for the cluster. Test them and pull them out to clean the connectors with some emery cloth/sandpaper. Re-insert, test and trial.
Could also be the wiring and harnesses connected to the back of the cluster, the ribbons within the cluster.
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