Code P0502, VSS wire replacing schematic needed

Tiny
MONEXELLA
  • MEMBER
  • 2001 CHEVROLET 1500
  • 5.3L
  • 4WD
  • AUTOMATIC
  • 140,753 MILES
The VSS isn't working, the speedometer doesn't work but we have odometer etc. We replaced the VSS plugs but we still get the P0502 code (VSS Circuit low input) I would like to know how to replace the wires (or check if they are open/closed circuits) in a the truck listed above.
Sunday, March 6th, 2022 AT 6:46 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

I have attached the trouble shooting steps for the code P0502. It will show step by step process to find the issue. It also has the wiring schematics.

You will need a multimeter to perform these steps.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please let me know if you have any questions.
Thank you.
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Monday, March 7th, 2022 AT 9:57 AM

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