Is the CEL ON?
First check whether either fuse 24 (15A) (w/ SRS) or 12 (15A) (w/o SRS) is blown. Assuming the VSS is fine (usually the VSS is bad in this situation), next check whether there is an open in the YEL/BLU wire powering the speedo. If all of the latter are fine, then you likely need to replace these gauges.

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