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Dead Speedometer, Just Replaced VSS...Nothing

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Old Jul 2, 2012 | 09:48 PM
  #21  
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Here is the testing procedure
Attached Thumbnails Dead Speedometer, Just Replaced VSS...Nothing-speedo.jpg  
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Old May 24, 2020 | 06:02 PM
  #22  
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Originally Posted by bamxbam
Tried installing another gauge cluster, and the speedometer still won't work, the needles all swept right to left on it upon installation so I'm sure the driver/motor is good. I am now convinced it's a wiring problem between the gauge cluster and PCM, because I had a scanner hooked up to it last time and it was showing the speed on there. Seems like the majority of the shops I called are not interested in fixing this or want to charge a huge diagnostic fee... where do I go from here?
just repaired mine by putting a test light on the vss signal out. While driving the light didn’t flash nor did my mph work. Replaced the pcm and all works now. I would do this 1st. Hope this helps as the threads 8 years old now.
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Old Apr 1, 2025 | 08:51 AM
  #23  
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Hello there, old post, I know, but I am having the same issue, only difference is my 1999 T/A is automatic. Did you resolve it?
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Old Apr 1, 2025 | 10:45 AM
  #24  
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Originally Posted by transam5.7lt1
Hello there, old post, I know, but I am having the same issue, only difference is my 1999 T/A is automatic. Did you resolve it?
I replaced the PCM to resolve the issue. I know this isn’t common however it was my issue. My car was 4l60e
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Old Apr 17, 2025 | 10:53 AM
  #25  
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Oh wow, I hope that is not my case, speedometer was working until battery died, got a new battery and now the speedometer does not work. I replaced speed sensor and that didn't fix it, I will make a new connector to the sensor from the PCM to see if that works.
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