Why is my speedometer gauge jumping around?
Yesterday when coming home from the store my speedometer gauge needle as well as the RPM needle started jumping around and going to 80 MPH on the speedometer while I was going at most 20 MPH.
It would jump around and then go back to normal and then Jump around again?
Is the vehicle still safe to drive and what could be causing this?
It's a 92 Chevy Suburban and has been great since I bought it 5 years ago.