VSS vehicle speed sensor.

[1970Custom]

Throwing this code, flashing O/D light and speedo not working. Is it an easy fix and where is the sensor located?

Thanks much.

 

[smokey]

It is either on the right side of the transmission or on the rear axle. Depends on the year.

 

[dustybumpers]

Sensor is on the rear near the top. Be very careful unplugging it, the harness breaks easy. Other than that, no problem. Just remove the old one, and put in the new one. A little di electric grease on the fitting when you put it back in. Whole thing will take 5 minutes.

 

[john112deere]

Year?

I think for most of 'em it's on the rear axle and a a fairly straightforward remove-and-replace type repair, but I've never done one.

 

[1970Custom]

Duh, 96 4.slo

 

[smokey]

The 96 should be on the top right of the transmission

 

[1970Custom]

The VSS would cause shifting and speedo issues correct

 

[smokey]

Yes sir that would cause that.

 

[1970Custom]

Charlie, Randy, Ian, thank you much.

 

[smokey]

Make sure the connector is good. I saw a few that corroded causing problems.

 

[1970Custom]

Replaced the sensor, fixed the code but the speedometer still dances, noticed that the plug had been spliced in so tomorrow I'm going to pull it apart, clean the wires, reconnect it and hope that cures my issues.

 

[Fellro]

I have had aftermarket VSS's give me trouble like that due to the air gap not being quite right. The sensor doesn't get quite close enough to the tone ring. I actually had to file the sensor down such that it would seat deeper on one for the 92.

 

[Mil1ion]

The 96 Powertrain sensor should have it under the hood near the firewal

I have the same issue on my 95 and I checked the autozone site for details

Good info there.

 

[1970Custom]

I'm going off what the codes tell me and it said VSS nothing about a powertrain sensor.I'm guessing it's corrosion in the two wires as they're just unprotected butt splices. Going to redo them tomorrow and better protect them as well as reclean the main connection.

 

[1970Custom]

Sensor replaced, redid the connections, made sure the sensor was seated correctly, worked for about five minutes then went back to bouncing and will only kinda work when warmed up and throttle applied, lift off pedal and the speedo dies.