Speedometer not working..

HaZeMySt · #1 (**permalink**) 09-22-2012, 11:35 AM

Where is the sensor for the speedometer? It's not working and I have some dumby lights on the cluster.. Thanks!

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ZMANN · #2 (**permalink**) 09-22-2012, 11:36 AM

rear axle on top / does ABS also 1 bolt 10 or 13 mm I think
pull and clean it's called a VSS = Vehicle Speed Sensor

HaZeMySt · #3 (**permalink**) 09-22-2012, 11:40 AM

I replaced that but it still doesn't work.

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HaZeMySt · #4 (**permalink**) 09-22-2012, 12:00 PM

That's the abs sensor, not the vss. Any help please

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ZMANN · #5 (**permalink**) 09-22-2012, 12:56 PM

Oh OK then

**mts678** · #6 (**permalink**) 09-22-2012, 01:17 PM

Idk about these trucks, but on Chevys the vss is in the Trans tail housing

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ZMANN · #7 (**permalink**) 09-22-2012, 01:24 PM

this aint a cheby

f250Jason · #8 (**permalink**) 09-22-2012, 01:31 PM

You have an output shaft speed sensor on the top of the tailhouse on the transmission. If it fails though, you should get a code P0720. If you aren't getting any codes, makes me wonder if it isn't a problem with your cluster. May be cheap enough just to swap that out to see. I am not sure which of the two, OSS or the VSS sends the speedometer signal of the top of my head.

**EDIT** looks like the axle sensor they are calling a wheel speed sensor, so I think an assumption that the OSS would be the one to send a signal that will feed the speedometer, but like I say....when it fails, you should be getting a code...