The speedometer output signal is generated by the PCM but my guess is the speedometer is bad though is the connections are all good. Try to remove the cluster and remove the connector then plug the connector too in to see if it was a bad connection.
Here is a video how on to do it.
It also shows a rebuilt cluster getting installed.
Please let us know what you find. We are interested to see what it is.
Sunday, November 26th, 2017 AT 6:54 PM