The Transmission Display on my 03 2500HD instrument cluster recently has been too dim to see in daylight and the fuel gauge needle is occasionally slow to move after a full up so I was researching a fix via google and found several sites that offer a complete rebuild of the the cluster for a reasonable price. The quote from the following site seems to describe the problem you are experiencing.
"MPORTANT: If your display reads "odometer error" or is scrolling through the languages, please call before sending in for repair. These issues are repairable but are not part of our standard rebuild. '"
https://circuitboardmedics.com/2003-...luster-repair/
I'm planning to send mine in to them for a rebuild and LED back-light upgrade.
Bill
03 2500HD D/A CC/SB/4WD,OilGuard, MegaFilter,LiftPump/PreFilter, Bilsteins,RetraxRollTop,J&J Boards,Coolant Filter,AlliDeepPan,FastIdle,AllHeadLightsOn,
98 K3500 6.5,SOLD