Speed Sensor Problem Again

[VetteMed]

Originally Posted by HIZNHRZ

When the Check Engine light goes on, the car idles like crap, the adjustable suspension is no longer adjustable, the radio volume that increases with speed no longer works, etc seems to indicate the ECM is not happy (i.e. seeing no data input). Your suggestion is a logical check and it's also easy - certainly worth checking. Thanks!

VSS is used for the SRC (ride control), and the radio volume auto-adjust, so it seems likely that the ECM and/or CCM (more likely to be influencing SRC and radio), is in fact not receiving the VSS signal.