Hi all, my mother-in-law's car shows a PO500 Vehicle Speed Sensor malfuntion. While I'm driving the speedometer drops to zero every now and then, then goes back to normal. If I replace this sensor, then would I also have to replace the speedometer cable? The auto parts stores say the sensor comes either with cable or not, and a big difference in price. I would greatly appreciate any suggestions as I am unsure about this. Thank you

The speed sensor replaces the cable. One is a mechanical system and one is an electronic system. The speed sensor may resolve it but it could also be related wiring or the PCM triggering the code.




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I'm not sure I understand what you mean. I thought the sensor and cable were two different components, that's why when I looked it up for pricing, it said the sensor with or without cable. Do you mean to not replace the speedometer cable? Thank you

No car uses both. The sensor replaces the cable. You do not have a cable.




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Ok, thanks very much for the information. I appreciate it!

Does anyone know the location of the speed sensor for this car?

Down behind the engine on top of the transmission. Look under where the exhaust crosses.


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78 Corvette Pace Car For Sale-18k mi orig-Florida

Thanks guys, youall always have great information, you don't know how much I appreciate your help. Thanks again