It's probably the gauge it self that is bad , they do go bad . Does the vehicle run an shift good ? The vehicle speed sensor is an input to the transmission control module (computer) an the TCM is on the CCD data bus , so are other modules . Like the ECM - engine computer an what ever other modules your vehicle has . The TCM shares speed info with ECM , instrument cluster etc... So if the transmission shifts good an engine runs ok the VSS is good .
Answers & Comments
It's probably the gauge it self that is bad , they do go bad . Does the vehicle run an shift good ? The vehicle speed sensor is an input to the transmission control module (computer) an the TCM is on the CCD data bus , so are other modules . Like the ECM - engine computer an what ever other modules your vehicle has . The TCM shares speed info with ECM , instrument cluster etc... So if the transmission shifts good an engine runs ok the VSS is good .