I confirmed that the cluster is bad and needs replacement. Are there any options other than hunting for a used one?
My '82 S10 cluster failed in an alarming smoky blaze of glory while underway, and was repaired by Escondido Auto Electric.
Might try an auto electric shop. Truck was still smoking when I pulled in. Laughing hard,
"We saw you get off Hwy 78!" "We see that all the time..." Failure of the cluster pathway circuit board.