OD Light Flashing (Get P053 Code but cant figure out)

!997 F 150 - Driving home the other night the overdrive light starts flashing so I get home and pull the codes and I get a VSS sensor code. So I replace sensor but does not help. Checked sensor Seems fine checked wire going to sensor seems fine. Speedometer bounces around and light starts flashing everytime I drive it. Any other Ideas Would greatly be appreciated.



1997 F150 215,000 miles