My friend has a 1990 sedan Deville and one day the digital instrument cluster started reading kmph instead of mph. She dosen't know a lot about cars or electronics so she dosn't know how to fix it. There is a chance that she held down the wrong button or something and that caused it to change. My question is what do I need to do to change it back to mph.
Thanks in advance.
Matt.

 

this is an easy fix. there is a button that you push that alternates frm metric to standard it should be on the left side of theinstrument clusternear the odometer readout not the tripodometer readout. you dont have to push and hold it just push once and it should be ok.